Resource Type
Counties
3 Matching Results
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Speculum.
Patent for an improved speculum, including instructions and illustrations.
Date:
September 15, 1914
Creator:
P'Pool, Frank E.
System:
The Portal to Texas History
Submerged Double-Acting Pump.
Patent for a submerged double acting pump, which has a continuous flow of water.
Date:
November 15, 1910
Creator:
Morris, Andrew P.
System:
The Portal to Texas History
Flat Iron Heater
Patent for "a receptacle insertible within a stove opening in which the irons to be heated are placed" (lines 11-13), including illustrations.
Date:
April 15, 1913
Creator:
Martin, Enoch
System:
The Portal to Texas History