Aquarium filter

Details Aquarium filter Aquarium filter

1977-04-26

1978-08-15

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2301

Patent

active

D02489651

REFERENCES:
patent: D213691 (1969-04-01), Rosenel
patent: D216259 (1969-12-01), Sesholt
patent: 2748075 (1956-05-01), Hovlid
patent: 3362537 (1968-01-01), Cline
patent: 3487440 (1969-12-01), Newsteder
patent: 3624777 (1971-11-01), Gardner
patent: 3746169 (1973-07-01), Willinger et al.

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