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Wrench.

Description: Patent for an improved wrench which utilizes two circular heads, individually situated at the ends of a single handle.
Date: January 13, 1914
Creator: Johnson, Alva Putman
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Shifting Camera Back.

Description: Patent for a shifting camera back that allows a photographer to take a large number of photographs on a single plate or film, including instructions and illustrations.
Date: September 15, 1914
Creator: Moine, Selest E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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