Circulation and level control valve

Details Circulation and level control valve Circulation and level control valve

1978-06-12

1980-01-29

Artis, Henry K.

Baths, closets, sinks, and spittoons

Dry closets

With heating meas

417217, 137433, 13762547, 4172, E04H 316, E04H 318

Patent

active

041853334

ABSTRACT:
Liquid levels for controlled in systems that include different liquid bodies between which liquid circulates. Such bodies may typically include swimming pools and spas.

REFERENCES:
patent: 3528451 (1970-09-01), Hansen
patent: 3623165 (1971-11-01), Whittell, Jr.
patent: 3739405 (1973-06-01), Schmidt
patent: 3781925 (1974-01-01), Curtis et al.
patent: 3938553 (1976-02-01), Ortega
patent: 3943580 (1976-03-01), Carter
patent: 3997925 (1976-12-01), Hough
patent: 4014052 (1977-03-01), Wolos

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