Exit operator

Details Exit operator Exit operator

1986-09-22

1988-09-27

Bullock, B. J.

Tools and hardware

Handle, knob or pull

Combined

Patent

active

D02978067

REFERENCES:
patent: D248444 (1978-07-01), Folger et al.
patent: D268003 (1983-02-01), Ohno
patent: D281573 (1985-12-01), Miller
patent: 3663047 (1972-05-01), Zawadzki
patent: 3877262 (1975-04-01), Williams
patent: 4624490 (1986-11-01), Miller

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