Resource Type
States
Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Adding-Machine
Patent for improvements to adding machines, which is key-operated and includes a vertically disposed shaft and a means to actuate the sliding plate.
Date:
January 5, 1915
Creator:
Gatewood, William F.
System:
The Portal to Texas History
Fan Spring-Motor
Patent for a portable fan spring motor.
Date:
January 28, 1913
Creator:
Von Hohenstein, Charles H.
System:
The Portal to Texas History
Flexible Joint
Patent for a flexible joint provides "an improved and simplified device that is simple, durable and reliable in construction and effective and efficient in operation" (lines 10-13).
Date:
November 16, 1915
Creator:
Mooney, Thomas H.
System:
The Portal to Texas History