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Research Guides

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Browse This!

You can browse in Gov Pubs U.S. Stacks for documents from the Patent and Trademark Office using the SuDoc number C 21.

Autographic Printing

Detailed, ink drawings of the parts for Thomas Edison's patent US-Patent 180857, autographic printing.

Thomas Edison's drawings from US-Patent 180857 in 1876.

Image courtesy of the U.S. Patent and Trademark Office, from Wikimedia Commons