Tools and hardware – Locking or closing device
Patent
1975-11-13
1977-04-12
Wertman, William N.
Tools and hardware
Locking or closing device
D0809
Patent
active
D02440040
REFERENCES:
patent: 3038569 (1962-06-01), Knox
patent: 3287050 (1966-11-01), Ferrante
patent: 3480249 (1969-11-01), Waner
patent: 3608940 (1971-09-01), Mueller
patent: 3917331 (1975-11-01), Duran
Elkhart Rivet & Register Co., Inc.
Hobbs Marmaduke A.
Wertman William N.
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