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Lock

Description: Patent for a general lock but made especially for trunk locks. It adds a spring lock and preventative measures against lock picking.
Date: October 14, 1902
Creator: Kirk, Robert L.
Partner: UNT Libraries Government Documents Department

Nut-Lock

Description: Patent for a nut-lock.
Date: February 24, 1903
Creator: Biggs, Daniel & Alexander, Angus E.
Partner: UNT Libraries Government Documents Department

Nut Lock

Description: Patent for a nut lock. Illustrations included.
Date: July 4, 1905
Creator: Slayton, Charles E. & Zellner, Daniel L.
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a nut-lock that is meant to be screwed onto a bolt, threaded shaft, axle spindle, or other similar screws. The nut has an improved construction and a lock that consists of a tiny pin that must be pulled out before the nut can be unscrewed.
Date: September 19, 1893
Creator: Stewart, William Mills
Partner: UNT Libraries Government Documents Department
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