Liquid purification or separation – Filter – With flow controller for material being treated
Patent
1977-04-04
1978-09-19
Cuchlinski, Jr., William A.
Liquid purification or separation
Filter
With flow controller for material being treated
13762529, 210169, B01D 3522
Patent
active
041152760
ABSTRACT:
A multi-ported backwash valve for a swimming pool and filter, comprises:
REFERENCES:
patent: 2209989 (1940-08-01), McCanna
patent: 2613056 (1952-10-01), Hughes
patent: 3365064 (1968-01-01), Horan, Jr.
Cuchlinski Jr. William A.
Haefliger William W.
Purex Corporation
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