Resource Type
Counties
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Window-Sash Lock
Patent for "certain new and useful Improvements in Window-Sash Locks" (lines 5-7). "The object in view is to produce a simple and efficient device..., [which] consists essentially in the provision of means for permitting either sash to be locked or one sash to be partially or fully opened..." (lines 17-22).
Date:
July 9, 1918
Creator:
Rickel, Tremont W.
System:
The Portal to Texas History
Process of Increasing the Quality and Volume of Oil in Wells and Removing the Oil Therefrom.
Patent for a method for drawing a higher quality and grade of oil from a well through the combination with gas trapped in the well.
Date:
May 9, 1922
Creator:
Hallmark, Elmer C.
System:
The Portal to Texas History