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Trap.
Patent for a small animal trap that prevents injury to the animal. When the animals step on the pedal inside the enclosure, a door is automatically dropped. The animal is trapped inside the enclosure.
Date:
June 27, 1922
Creator:
Dinkins, Earl T.
System:
The Portal to Texas History
Refrigerator
Patent for improvements for vacuum refrigerators such that cold air circulation and heat exclusion are improved, including illustrations.
Date:
June 27, 1922
Creator:
Knutson, William K.
System:
The Portal to Texas History