Door closer

Tools and hardware – Locking or closing device

Patent

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0807

Patent

active

D04215613

REFERENCES:
patent: D261099 (1981-10-01), Russell
patent: D273457 (1984-04-01), Matsuo et al.
patent: D274212 (1984-06-01), Shohoji
patent: D281762 (1985-12-01), Okazaki
patent: 3415562 (1968-12-01), Petersen
Item 1250 High impact cover, Sargent Door Closers, May 1983.
Full Cover, Russwin Door Closers, p. 12-11, Mar. 1986.

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