Self-closing door hinge

Details Self-closing door hinge Self-closing door hinge

1984-05-31

1986-08-12

Bullock, B. J.

Tools and hardware

Hinge

Patent

active

D02850435

REFERENCES:
patent: D092931 (1934-07-01), Sayre
patent: D195827 (1963-08-01), Melcher
patent: 3545032 (1970-12-01), Dielman
patent: 3748688 (1973-07-01), Berkowitz
patent: 4190925 (1980-03-01), Koivusalo
Sweeyt's Architectural Catalog File 1962; sec. 19e/Na; p. 2; hinge 59-5825.

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