Resource Type
Counties
3 Matching Results
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Lock
Patent for a lock. This invention is a design of door lock that uses a key and combination. Illustration included.
Date:
February 12, 1907
Creator:
Katzenberger, Oscar
System:
The Portal to Texas History
Refrigerating Apparatus
Patent for a refrigerating apparatus. This invention is a coil composed of two pipes of different diameters placed inside of each other acting as a condensing agent. Illustration included.
Date:
February 12, 1907
Creator:
Holdgreen, Julius H.
System:
The Portal to Texas History
Dirigible Headlight
Patent for an improved lamp bracket which will decrease vibration and increase stability. Connective devices from the steering mechanism to the headlight are also improved to increase responsiveness.
Date:
February 12, 1918
Creator:
Wogenstahl, Leo J.
System:
The Portal to Texas History