Locks – Operating mechanism – Key
Patent
1978-10-20
1980-12-09
Wolfe, Robert L.
Locks
Operating mechanism
Key
70452, E05B 6300
Patent
active
042377129
ABSTRACT:
A latch and cylinder guard which can be bolted through a door without interfering with the latch and providing a double layer of metal in the latch vicinity.
REFERENCES:
patent: 3645045 (1972-02-01), Gervis
patent: 3768284 (1973-10-01), Kent
patent: 4074552 (1978-02-01), Smith
Jacobson Donald A.
Wolfe Robert L.
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