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Piston Packing

Description: Patent for extansible rings for piston packing.
Date: November 21, 1916
Creator: Miles, Charles H.
Partner: UNT Libraries Government Documents Department

Display Advertising Machine

Description: Patent for rotating machine which will display papers or advertisements for cetain intervals of time before rotating and changing.
Date: November 21, 1916
Creator: Barnett, John B.
Partner: UNT Libraries Government Documents Department
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