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Nut-Lock.
Patent for a nut lock, which stops the nut from rotating.
Date:
December 8, 1908
Creator:
Brown, John J.
System:
The Portal to Texas History
Permutation-Lock.
Patent for a permutation or combination lock for mail boxes.
Date:
February 18, 1908
Creator:
Maxfield, James Robert
System:
The Portal to Texas History