Resource Type
Counties
3 Matching Results
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Cultivator.
Patent for a cultivator that has an improved method of attaching a harrow to the cultivator.
Date:
February 7, 1911
Creator:
Kelly, Robert Marvin
System:
The Portal to Texas History
Automatic Safety Attachment for Air-Brakes
Patent for an automatic safety attachment for air brakes that can be attached to trains and automobiles. Illustrations included.
Date:
April 11, 1911
Creator:
Hamilton, Ernest Hubbard
System:
The Portal to Texas History
Gas-Exploded Ordnance
Patent for a gas gun. Illustrations included.
Date:
May 30, 1911
Creator:
Hamilton, Ernest Hubbard
System:
The Portal to Texas History