Aquarium filter

Details Aquarium filter Aquarium filter

1980-12-01

1983-04-12

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2301

Patent

active

D02686074

REFERENCES:
patent: D179692 (1957-02-01), Malis
patent: D183884 (1958-11-01), Halpert
patent: D184842 (1959-04-01), Willinger
patent: D189958 (1961-03-01), Arak
patent: D206929 (1967-02-01), Axelrod
patent: D208137 (1967-07-01), Gare
patent: D210122 (1968-02-01), Kelley et al.
patent: D216259 (1969-12-01), Sesholtz
patent: 2769779 (1956-11-01), Vansteenkiste et al.
patent: 2877898 (1959-03-01), Lacey
patent: 3119774 (1964-01-01), Arak
patent: 3321081 (1967-05-01), Willinger
patent: 3529574 (1970-09-01), Kelley
patent: 4035298 (1977-07-01), Cloke et al.
patent: 4077877 (1978-03-01), Orensten et al.
patent: 4206054 (1980-06-01), Moore et al.
patent: 4312752 (1982-01-01), Malik

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