Gas valve operating wrench

Details Gas valve operating wrench Gas valve operating wrench

1993-03-15

1994-12-27

Feifer, Melvin B.

Tools and hardware

Other tools and implements

Entire article formed substantially from a single piece of...

Patent

active

D03537552

REFERENCES:
patent: D130756 (1941-12-01), Howard
patent: D267392 (1982-12-01), Hildebrandt
patent: D268086 (1983-03-01), Waters
patent: D282046 (1986-01-01), Dumond et al.
patent: D287927 (1987-01-01), Zankich
patent: D300000 (1989-02-01), Reinhardt
patent: D301010 (1989-05-01), Renna
patent: 4368569 (1983-01-01), Van Dam, Jr.

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