Resource Type
Counties
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Pump.
Patent for a new and useful improvements in pumps.
Date:
March 15, 1898
Creator:
Mauldin, Alfred W.
System:
The Portal to Texas History
Nut-Lock
Patent for a nut lock. Illustrations included.
Date:
February 15, 1910
Creator:
Davidson, Charles E. & Mauldin, Blake I.
System:
The Portal to Texas History