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Pneumatic Propulsion Means.

Description: Patent for a new and improved pneumatic propulsion means, including instructions and illustrations.
Date: May 2, 1899
Creator: Walker, James C.
Partner: UNT Libraries Government Documents Department

Sash-Lock.

Description: Patent for a sash lock that comprises two members that are secured together in a manner to hold the meeting rails in close contact.
Date: May 2, 1916
Creator: Huber, Frederick K.
Partner: UNT Libraries Government Documents Department

Envelop Fastener

Description: Patent for an envelop fastener. Illustration included.
Date: May 2, 1905
Creator: Albea, Mary
Partner: UNT Libraries Government Documents Department

Compressing-Machine.

Description: Patent for a compressing machine for pressing plastic, cotton, and cotton seeds.
Date: May 2, 1911
Creator: Baade, John
Partner: UNT Libraries Government Documents Department
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