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  2. Category:Patent search services - Wikipedia

    en.wikipedia.org/.../Category:Patent_search_services

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  3. 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.

  4. United States Patent and Trademark Office - Wikipedia

    en.wikipedia.org/wiki/United_States_Patent_and...

    The United States Patent and Trademark Office (USPTO) is an agency in the U.S. Department of Commerce that serves as the national patent office and trademark registration authority for the United States.

  5. Chemical Abstracts Service - Wikipedia

    en.wikipedia.org/wiki/Chemical_Abstracts_Service

    Chemical Abstracts Service Building B in August 2009. Columbus, Ohio. STN (Scientific & Technical Information Network) International is operated jointly [4] by CAS and FIZ Karlsruhe, and is intended primarily for information professionals, using a command language interface.

  6. Ohio Art Company - Wikipedia

    en.wikipedia.org/wiki/Ohio_Art_Company

    In the 1950s, a man named W.C Killgallon began working for the Ohio Art Company. The Killgallon family still owns and operates the Ohio Art Company. The final product of the Etch A Sketch was first produced on July 12, 1960 at the Bryan, Ohio factory. Another toy produced by Ohio Art in the 1960s was the Bizzy Buzz Buzz, invented by Bernard ...

  7. Keithley Instruments - Wikipedia

    en.wikipedia.org/wiki/Keithley_Instruments

    Keithley Instruments bench-top digital multimeter. Keithley Instruments is a measurement and instrument company headquartered in Solon, Ohio, that develops, manufactures, markets, and sells data acquisition products, as well as complete systems for high-volume production and assembly testing.

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