Liquid purification or separation – Structural installation – Closed circulating system
Patent
1994-03-28
1995-04-25
Dawson, Robert A.
Liquid purification or separation
Structural installation
Closed circulating system
210282, 210283, 210284, 210233, 210255, 210261, 210473, 206503, 119259, A01K 6304
Patent
active
054096030
ABSTRACT:
An additional trough for an aquarium filter container comprising a rectangular body having an open top and consisting of a bottom panel, two long-side panels and two short-side panels, said bottom panel being formed with a plurality of equidistant longitudinal and transverse grooves making a plurality of intersecting points, a perforation being formed on alternate one of said intersecting points and equally distant from each other, said bottom panel further having at the outer side a protruded portion which is smaller than the open top of said rectangular body in area and extends outwardly to a flange and downwardly to form four elongated projections, said bottom panel having an outer side formed with a plurality of annular portions concentric with corresponding perforations.
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Dawson Robert A.
Lei Alfred
Popovics Robert James
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