Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Treatment
Patent
1986-07-09
1988-02-09
Bullock, B. J.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Treatment
Patent
active
D02941724
REFERENCES:
patent: D205582 (1966-08-01), Willinger
patent: D215283 (1969-09-01), Sesholtz
patent: 4512885 (1985-04-01), Willinger
Longlife Aquarium Filters brochure (1971) "Quick Change Filter, No. F-008.
Bullock B. J.
Vinson Brian N.
Willinger Bros. Inc.
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