Exit operator

Tools and hardware – Handle – knob or pull – Combined

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D 8320

Patent

active

D03688402

REFERENCES:
patent: D199966 (1965-01-01), Foster
patent: 2910857 (1959-11-01), Muessel
patent: 3383130 (1968-05-01), DeAvila
patent: 3819213 (1974-06-01), Vanderburgh
patent: 3873141 (1975-03-01), Peterson
patent: 4084845 (1978-04-01), Eckert
patent: 4470625 (1984-09-01), Walsh et al.
patent: 4895399 (1990-01-01), Horgan, Jr.

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