Tools and hardware – Locking or closing device
Patent
1987-10-13
1990-02-06
Burke, Wallace R.
Tools and hardware
Locking or closing device
Patent
active
D03058611
REFERENCES:
patent: D290442 (1987-06-01), Floyd et al.
patent: 3187528 (1965-06-01), Check
patent: 4637237 (1987-01-01), Witkoski et al.
patent: 4671086 (1987-06-01), Fogleman et al.
Simplex Security Systems Brochure (Jun. 1986), p. 1, Series 3000 Pushbutton Combination Access Control Lock.
Burke Wallace R.
Ferco International Usine de Ferrures de Batiment
Vinson Brian N.
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