Resource Type
Counties
4 Matching Results
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Nut-Lock
Patent for a nut lock. Illustrations included.
Date:
May 21, 1912
Creator:
Lance, Andrew M.
System:
The Portal to Texas History
Pump-Jack
Patent for a pump jack for operating the oil well pump rods.
Date:
April 23, 1912
Creator:
Seybert, Guy W.
System:
The Portal to Texas History
Fire and Burglar Alarm.
Patent for a fire and burglar alarm for use in buildings.
Date:
February 13, 1912
Creator:
Gregory, Marshall J.
System:
The Portal to Texas History
Spring-Wheel
Patent for a wheel supported by spring spokes. Illustrations included.
Date:
September 24, 1912
Creator:
Hudson, Alexander S.
System:
The Portal to Texas History