Liquid purification or separation – Structural installation – Closed circulating system
Patent
1980-07-09
1982-06-08
Granger, Theodore A.
Liquid purification or separation
Structural installation
Closed circulating system
2102421, E04H 320
Patent
active
043338291
ABSTRACT:
The present invention is concerned with an apparatus for removing foreign matter from the top surface of water, for use with aquaria, which comprises a discharge tube stationarily disposed in the aquarium and having its upper opening rim below the water surface, in which tube is disposed another tube open at the top and bottom and provided with a float in the upper end region.
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