Deadbolt knob and doorknob engaging security unit

Details Deadbolt knob and doorknob engaging security unit Deadbolt knob and doorknob engaging security unit

1991-03-01

1993-04-13

Vinson, Brian N.

Tools and hardware

Locking or closing device

Lock, latch or bolt

D 8343

Patent

active

D03347036

REFERENCES:
patent: 591177 (1897-10-01), Palmer
patent: 1082427 (1913-12-01), Klespies
patent: 2463195 (1946-07-01), Mungan
patent: 3263462 (1964-03-01), Suroff et al.
patent: 3423974 (1966-07-01), Bernsley
patent: 3585827 (1971-06-01), Dominguez
patent: 3724246 (1973-04-01), Katsaros
patent: 3927544 (1975-12-01), Klein
patent: 3933014 (1976-01-01), Moses
patent: 4064721 (1977-12-01), Morgan
patent: 4082334 (1978-04-01), Volta et al.
patent: 4189176 (1980-02-01), Hamilton
patent: 4279137 (1981-07-01), Cook
patent: 4605251 (1986-08-01), Finlay
patent: 4715200 (1987-12-01), Katsaros

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