As recently as yesterday, July 15, 2017, I saw an article on Dailybeast about Tesla; crediting him with 700 patents: http://www.thedailybeast.com/how-nikola-tesla-sparked-the-electric-age -- Tesla's patent attorneys frequently filed for patent protection in foreign countries, but these foreign patents are duplicates on the list of 111 unique Tesla patents presented here... And if you actually count them (I have) you will find there are 112 on this list: US Patent 655,838 was reissued and legally bears the number 11,865... So if you are searching for this, both patent numbers have to be included, but it is the same patent, same technology, in both documents. All other duplicates have been eliminated from this list. Unique unpatented Tesla, and patented Tesla related technologies are presented at the very bottom of the page.
Patents are listed here by their US patent number, and the dates provided throughout are the filing dates, (unless otherwise specified) not the publication or issuing date. We don't care when the US Patent Office finally issues a Tesla patent: to follow his work we need the dates when Tesla signed off that the applications were ready. Some applications were delayed in processing for years: they failed examination, they were appealed by Tesla, they failed again, they were appealed again. So the dates the patents were issued do not necessarily reflect the same order they were filed in.
Tesla links his patents, lectures, and articles together within the text. He frequently refers back to a patent by file date, serial number, or patent number. In two instances in the documentation provided, Tesla refers to entire batches of related patents by the US Patent Office publication dates. Having worked from text documentation for years, I am able for the first time to have my patent documentation cross-linked for my own personal reference, and yours. With the patents in HTML I am starting the process of linking and grouping, both by linking Tesla's specific references in the text, and by listing related patents (and other references) after the text.
Also: The printed versions of Tesla patent diagrams are frequently awful, worse than useless for a person who would like to understand the technology at a level that is reproducable... In places, the original patent diagrams are exquisitely detailed: with important electrical connections diagrammed; tiny iron cores shown in transmitter patents as a single dot, etc.. Understanding the technology at that level requires the highest resolution patent diagrams obtainable, and those png files are linked to the lower resolution images displayed at the bottom of these pages:
Method of Insulating Electrical Conductors - Sept 21, 1900
Commutator for Dynamo-Electric Machines - May 6, 1885
Electric-Arc Lamp - March 30, 1885
Electric-Arc Lamp - July 13, 1886
Regulator for Dynamo-Electric Machines - May 18, 1885
Regulator for Dynamo-Electric Machines - June 1, 1885
Regulator for Dynamo-Electric Machines - Jan 14, 1886
Dynamo-Electric Machine - Jan 14, 1886
Electro-Magnetic Motor - Oct 12, 1887
Electro-Magnetic Motor - Nov 30, 1887
System of Electrical Distribution - Dec 23, 1887
Electro-Magnetic Motor - Nov 30, 1887
Electrical Transmission of Power - Oct 12, 1887
Electrical Transmission of Power - Nov 30, 1887
Method of Converting and Distributing Electrical Currents - Dec 23, 1887
Commutator for Dynamo-Electric Machines - April 30, 1887
System of Electrical Distribution - Dec 23, 1887
Dynamo-Electric Machine - April 23, 1888
Dynamo-Electric Machine or Motor - May 15, 1888
Dynamo-Electric Machine - April 28, 1888
Regulator for Alternate-Current Motors - April 24, 1888
Thermo-Magnetic Motor - Mar 30, 1886
Method of Operating Electro-Magnetic Motors - Feb 18, 1889
Electro-Magnetic Motor - Jan 8, 1889
Method of Electrical Power Transmission - March 14, 1889
Dynamo-Electric Machine - March 23, 1889
Method of Obtaining Direct from Alternating Currents - June 12, 1889
Electro-Magnetic Motor - May 20, 1889
Method of Operating Electro-Magnetic Motors - May 20, 1889
Electro-Magnetic Motor - May 20, 1889
Electro-Magnetic Motor - May 20, 1889
Armature for Electric Machines - Tesla-Schmid - June 28, 1889
Electro-Magnetic Motor - May 20, 1889
Electro-Magnetic Motor - May 20, 1889
Pyromagneto-Electric Generator - May 26, 1887
Alternating-Current Electro-Magnetic Motor - Mar 26, 1890
Alternating Current Motor - Mar 26, 1890
Electrical Transformer or Induction Device - Mar 26, 1890
Electro-Magnetic Motor - April 4, 1890
Electro-Magnetic Motor - May 20, 1889
Method of Operating Arc Lamps - Oct 1, 1890
Alternating-Electric-Current Generator - Nov 15, 1890
System of Electric Lighting - Apr 25, 1891
Electro-Magnetic Motor - Jan 27, 1889
Electrical Meter - Mar 27, 1891
Electric Incandescent Lamp - May 14, 1891
Electro-Magnetic Motor - May 20, 1889
Method of and Apparatus for Electrical Conversion and Distribution - Feb 4, 1891
Electro-Magnetic Motor - July 13, 1891
Electrical Condenser - Aug 1, 1891
System of Electrical Transmission of Power - May 15, 1888
Electrical Transmission of Power - Dec 8, 1888
System of Electrical Power Transmission - Dec 8, 1888
Electrical Transmission of Power - May 15, 1888
Electric Generator - Aug 19, 1893
Coil for Electromagnets - July 7, 1893
Electrical Conductor - Jan 2, 1892
Means of Generating Electric Currents - Aug 2 1893
Reciprocating Engine - Aug 19, 1893
Incandescent Electric Light - Jan 2, 1892
Electric Railway System - Jan 2, 1892
Electrical Meter - Dec 15, 1893
Electromagnetic Motor - Oct 20, 1888
Alternating Motor - May 15, 1888
Electrical Condenser - Jan 2, 1892
Apparatus for Producing Electrical Currents of High Frequency and Potential - April 22, 1896
Apparatus for Producing Ozone - June 17, 1896
Method of Regulating Apparatus for Producing Currents of High Frequency - June 20, 1896
Method of and Apparatus for Producing Currents of High Frequency - July 6, 1896
Apparatus for Producing Electrical Currents of High Frequency - July 9, 1896
Apparatus for Producing Electrical Currents of High Frequency - Sept 3, 1896
Manufacture of Electrical Condensers, Coils, & Etc. - Nov 5, 1896
Apparatus for Producing Currents of High Frequency - Oct 19, 1896
Electrical Transformer - Mar 20, 1897
Electric Circuit Controller - Dec 2, 1897
Electric Circuit Controller - Mar 12, 1898
Electric Circuit Controller - Mar 12, 1898
Electric Circuit Controller - Mar 12, 1898
Electric Circuit Controller - Mar 12, 1898
Electrical Igniter for Gas Engines - Feb 17, 1897
Electric Circuit Controller - Dec 2, 1897
Electric Circuit Controller - Feb 28, 1898
Electric Circuit Controller - Apr 19, 1898
Method of and Apparatus for Controlling Mechanism of Moving Vessels or Vehicles - July 1, 1898
System of Transmission of Electrical Energy - Sept 2, 1897
Apparatus for Transmission of Electrical Energy - Sept 2, 1897
Method of Insulating Electrical Conductors - Sept 21, 1900 reissued as 11,865
Means for Increasing the Intensity of Electrical Oscillations - Mar 21, 1900
Method of Intensifying and Utilizing Effects Transmitted Through Natural Media - June 24, 1899
Method of Utilizing Effects Transmitted Through Natural Media - Aug 1, 1899
Apparatus for Utilizing Effects Transmitted Through Natural Media - Aug 1, 1899
Apparatus for Utilization of Radiant Energy - Mar 21, 1901
Method of Utilizing Radiant Energy - Mar 21, 1901
Method of Signaling - July 16, 1900
System of Signaling - July 16, 1900
Art of Transmitting Electrical Energy Through Natural Media - May 16, 1900
Fluid Propulsion - Oct 21, 1909
Apparatus for Transmitting Electrical Energy - Jan 18, 1902
Speed-Indicator - May 29, 1914
Lightning-Protector - May 6, 1916
Speed-Indicator - Dec 18, 1916
Valvular Conduit - Feb 21, 1916
Frequency Meter - Dec 18, 1916
Method of Aerial Transportation - Sept 9, 1921
Apparatus for Aerial Transportation - Oct 4, 1927
Tesla's Unpatented Defensive Particle Beam Weapon
Electromagnetic systems with double-resonant spiral coil components - Mar 5, 2009
Acoustic Piezo-Electric Field Generator
There are 111 unique patents in this list, however there are a number of patents that were divided or "split" into two separate applications. This was done by patent attorneys to increase the patent protection into "Means, Methods or Systems" and "Apparatus". Tesla and his patent attorneys were aware that competetors could construct a high-frequency generator (for instance) that would be unique enough to qualify for it's own patent and thereby evade or avoid conflict with apparatus that Tesla documented. To broaden the patent protection the "Means, Methods, or Systems" portion of a patent application was split off and language was added to state that the specific apparatus illustrated was irrelevent in the protection of the idea being presented. What you end up with are two patents showing the exact same technology, but they are two different, unique documents.
Lab-Tesla is hosting a high-resolution master file containing all of these patents... It's HUGE, 260 megs, but it has the complete collection and the PDF quality is very good: Tesla's Complete Patents - High Resolution - 260 megabytes