Check valve

Details Check valve Check valve

1980-09-08

1983-07-05

Ansher, Bernard

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D23 4, D24 53, D2301

Patent

active

D02696339

REFERENCES:
patent: D202701 (1965-11-01), Davis, Jr.
patent: D203323 (1965-12-01), Scaramucci
patent: D248485 (1978-07-01), Strauss et al.
patent: 3303819 (1967-02-01), Wade
patent: 3967645 (1976-07-01), Gregory
patent: 4067414 (1978-01-01), Funke

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