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Blotting Pad
Patent for an ink blotting pad. Illustration included.
Date:
November 5, 1912
Creator:
Smith, Charles A.
System:
The Portal to Texas History
Automatic Gas Valves
Patent for automatic gas valve that will close if the pressure is detected to be too low.
Date:
December 5, 1916
Creator:
Chism, Sylvester J.
System:
The Portal to Texas History