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Nut-Lock.
Patent for a nut lock that keeps bolts attached extra tightly.
Date:
January 31, 1911
Creator:
Greer, Benjamin J.
System:
The Portal to Texas History
Nut-Lock.
Patent for a nut lock that is easy to manufacture.
Date:
January 3, 1911
Creator:
Dowell, Lawson H.
System:
The Portal to Texas History