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in subjects: "Wrenches"  
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Wrench

Description: Patent for an improvement to wrenches. This wrench uses a sliding jaw system for increased utility.
Date: April 29, 1920
Creator: Grogan, Edward W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Wrench

Description: Patent for an improvement in the design of wrenches, particular for heavy work such as deep well drilling, but still being able to be designed at smaller sizes to handle lighter work.
Date: April 11, 1922
Creator: Reed, Clarence E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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