Door closer

Details Door closer Door closer

1981-04-24

1983-12-20

Burke, Wallace R.

Tools and hardware

Locking or closing device

D0807

Patent

active

D02718456

REFERENCES:
patent: D261099 (1981-10-01), Russell
patent: 2131564 (1958-09-01), Lasier
patent: 2220967 (1940-11-01), Lasier
patent: 2920338 (1960-01-01), Falk
patent: 2960718 (1960-11-01), Lasier
patent: 3259936 (1966-07-01), Sheridan
patent: 4086681 (1978-05-01), Nakanishi
"Dialmatic Door Closer", Catalog No. 80; Dexter Lock Co., Grand Rapids, Mich.; Brochure (4 pp.).

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