Dual impeller pump

Details Dual impeller pump Dual impeller pump

1994-05-24

1997-02-18

Drodge, Joseph W.

Liquid purification or separation

Processes

Treatment by living organism

119260, 210150, 210169, 210359, 2104162, 210780, 415143, 416198R, C02F 300, A01K 6304

Patent

active

056038313

ABSTRACT:
An improved aquarium pump for use with an aquarium filter which includes a filter box, a rotating biological filter element and a spray bar, the pump supplying water to the rotating biological filter element and the spray bar. The pump may include a pair of impellers for supplying water to the filter box and the spray bar, respectively.

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patent: 5419831 (1995-05-01), Fuerst et al.
patent: 5423978 (1995-06-01), Snyder et al.
Search report dated Aug. 15, 1995, PCT application serial No. PCT/US95/05482, filed May 3,1995.

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