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2. Patentscope - Wikipedia

   en.wikipedia.org/wiki/Patentscope

   Users can apply various search filters, such as publication date, patent classification, applicant's name, and legal status, to narrow down their searches. The system also supports boolean operators and wildcard characters, enabling complex and customized search queries. [13] [14] Patent family information

3. List of prolific inventors - Wikipedia

   en.wikipedia.org/wiki/List_of_prolific_inventors

   The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.

4. Google Patents - Wikipedia, the free encyclopedia

   en.wikipedia.org/wiki/Google_Patents

   Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.

5. List of Edison patents - Wikipedia

   en.wikipedia.org/wiki/List_of_Edison_patents

   Charles Batchelor was a superintendent for Edison toward the end of this series of patents. patent number – name of patent (external links to patent images in TIFF format) Electrographic Vote-Recorder. U.S. patent 0,090,646 – Electrographic Vote-Recorder : Edison's first patent. Permitted a "yes" or "no" vote via one of two switches.

6. List of Nikola Tesla patents - Wikipedia

   en.wikipedia.org/wiki/List_of_Nikola_Tesla_patents

   U.S. patent 390,721 - Dynamo Electric Machine - 1888 October 9 - Relates chiefly to the alternate current machine invented by Tesla; Related to patents numbered US381968 and US382280; Seeks to avoid mechanical drawback of running high frequency machines; Efficient at low speeds; Producing rotating magnetic poles in one element of the machine ...

7. Derwent World Patents Index - Wikipedia

   en.wikipedia.org/wiki/Derwent_World_Patents_Index

   The Derwent World Patents Index (DWPI) is a database containing patent applications and grants from 44 of the world's patent issuing authorities. [1] [2]Compiled in English by editorial staff, the database provides a short abstract detailing the nature and use of the invention described in a patent and is indexed into alphanumeric technology categories to allow retrieval of relevant patent ...