Vacuum relief plumbing fitting

Details Vacuum relief plumbing fitting Vacuum relief plumbing fitting

1990-07-02

1992-10-27

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Fitting

Patent

active

D03305848

REFERENCES:
patent: D219815 (1971-02-01), Palowsky
patent: D232552 (1974-08-01), Watson
patent: 1197395 (1916-09-01), Politsky
patent: 1695308 (1928-12-01), Wilt
patent: 2065523 (1936-12-01), Groeniger
patent: 2078879 (1937-04-01), Kaiser et al.
patent: 2312659 (1943-03-01), Luff
patent: 2570525 (1951-10-01), Collison
patent: 3346887 (1967-10-01), Sommer
patent: 3894302 (1975-07-01), Lasater
patent: 4998754 (1991-03-01), Matsumoto et al.

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