Deadlocking latchbolt for cylindrical lock
United States Patent 2865666
US Patent References:
Compound latch unit
- - 2711920

Deadlocking latch bolt
- - 2768014


Inventors:
Kubik, Paul P.
Publication Date:
12/23/1958
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Assignee:
YALE & TOWNE MFG CO
Primary Class:
292/163
International Classes:
E05B55/00