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Cranking Device
Patent for a cranking device. Illustration included.
Date:
August 27, 1912
Creator:
Christensen, Petter
System:
The Portal to Texas History
Weed-Killing Composition
Patent for "new and useful composition of matter designed for killing and preventing the growth of weeds and noxious grasses, and is particularly designed for killing and preventing the growth of Bermuda and Johnson grasses." (lines 9-14)
Date:
April 24, 1912
Creator:
Owen, Hillery O.
System:
The Portal to Texas History
Electric Switch
Patent for an electric switch. Illustration included.
Date:
December 10, 1912
Creator:
Ramsay, Robert L.
System:
The Portal to Texas History