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Trap
Patent for a steel animal trap. Illustrations included.
Date:
April 30, 1912
Creator:
Davidson, David L.
System:
The Portal to Texas History
Magneto-Contact.
Patent for magneto contacts, designed for easy removal, cleaning, and replacement, without short circuits, featuring novel construction features and parts arrangements.
Date:
April 26, 1921
Creator:
Rigsby, Virgil.
System:
The Portal to Texas History