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Lock.
Patent for a new and improved lock which includes "certain novel constructions, combinations, and arrangement of parts" (lines 11-13) as well as illustrations and instructions.
Date:
September 21, 1897
Creator:
Peterson, John J.
System:
The Portal to Texas History
Plow
Patent for a plow that has functional improvements in plows.
Date:
September 9, 1919
Creator:
Fudge, Henry E.
System:
The Portal to Texas History