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United States. Patent and Trademark Office Edit

Summary

Agent Type
Corporate Entity

Dates

  • 1836-present (Existence)

Name Forms

  • United States. Patent and Trademark Office

Notes

  • Biography/Historical Note

    The United States Patent and Trademark Office is an agency in the U.S. Department of Commerce for granting U.S. patents and registering trademarks. Skellings was issued Patent #4, 270, 824 on June 2, 1981 for a COLOR LANGUAGE TEACHING METHOD AND DISPLAY AND PROCESS FOR CREATING THE DISPLAY.