Tools and hardware – Locking or closing device – Lock – latch or bolt
Patent
1991-02-13
1993-03-16
Vinson, Brian N.
Tools and hardware
Locking or closing device
Lock, latch or bolt
Patent
active
D03339718
REFERENCES:
patent: D241910 (1976-10-01), Meisner
patent: 3085299 (1963-04-01), Roynand
patent: 4241541 (1980-12-01), Van Klompenburg et al.
Sweets Catalogue File (1962) Section 17a/Wi p. 15 "Roto Operators" hardware.
EntryGard.TM. Dual Arm Operator.
Kaplan Donald T.
Lieske Louis G.
Merchlewitz Anthony W.
Lake Country Sales, Inc.
Vinson Brian N.
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