Air operated valve

Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Valve or body therefor

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2301

Patent

active

D03798445

REFERENCES:
patent: D223095 (1972-03-01), Allen
patent: D331449 (1992-12-01), Adishian et al.
patent: 3712340 (1973-01-01), Deem
patent: 3788603 (1974-01-01), Snider
patent: 4926905 (1990-05-01), Helfenstein

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