Cover plate for a filter cartridge for a spa or swimming pool wa

Details Cover plate for a filter cartridge for a spa or swimming pool wa Cover plate for a filter cartridge for a spa or swimming pool wa

1987-02-25

1990-02-20

Gandy, James M.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Treatment

Patent

active

D03061990

REFERENCES:
patent: D160649 (1950-10-01), Muller-Munk
patent: D180928 (1957-09-01), Bliss
patent: D294167 (1988-02-01), Meissner
patent: 586709 (1897-07-01), Kunzel, Jr.
patent: 2218339 (1940-10-01), Manning
patent: 3392843 (1968-07-01), Mumby
patent: 3506475 (1970-04-01), MacDonnell
patent: 3520417 (1970-07-01), Durr et al.
patent: 3867294 (1975-02-01), Pall et al.
patent: 4425720 (1984-01-01), Elevitch
Schoner Wohnen, Aug. 1980, p. 84, Pot Cover A, middle of page.

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