Vacuum check valve

Details Vacuum check valve Vacuum check valve

1994-07-05

1995-11-14

Reid, Stella

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Valve or body therefor

Patent

active

D03642097

REFERENCES:
patent: D223095 (1972-03-01), Allen
patent: D225897 (1973-01-01), Jenkins
patent: D266863 (1982-11-01), Mason
patent: D274254 (1984-06-01), Jenkins

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