Combined aquarium filter and aerator

Details Combined aquarium filter and aerator Combined aquarium filter and aerator

1994-05-11

1996-03-26

Word, A. Hugo

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Treatment

Patent

active

D03682978

REFERENCES:
patent: D205582 (1966-08-01), Willinger
patent: D220486 (1971-04-01), Sesholtz
patent: D294172 (1988-02-01), Willinger
patent: 2767509 (1956-10-01), Breithaupt
patent: 3006476 (1961-10-01), Halpert
patent: 4532037 (1985-07-01), Willinger
patent: 4712327 (1987-12-01), Ross, Sr. et al.
patent: 4994177 (1991-02-01), Bogar, Jr.
patent: 5077932 (1992-01-01), Hetherington
patent: 5100543 (1992-03-01), Stauffer et al.
Dynaflo Motor Filter p. 32--Metaframe Catalogue #70, 1970.

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