Pneumatic Propulsion Means. (open access)

Pneumatic Propulsion Means.

Patent for a new and improved pneumatic propulsion means, including instructions and illustrations.
Date: May 2, 1899
Creator: Walker, James C.
System: The Portal to Texas History
Envelop Fastener (open access)

Envelop Fastener

Patent for an envelop fastener. Illustration included.
Date: May 2, 1905
Creator: Albea, Mary
System: The Portal to Texas History
Compressing-Machine. (open access)

Compressing-Machine.

Patent for a compressing machine for pressing plastic, cotton, and cotton seeds.
Date: May 2, 1911
Creator: Baade, John
System: The Portal to Texas History
Sash-Lock. (open access)

Sash-Lock.

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.
System: The Portal to Texas History