Bubble diffuser

Details Bubble diffuser Bubble diffuser

1989-08-21

1992-02-25

Word, A. Hugo

Animal husbandry

Aquarium, fish bowl, or stand therefor

Element or attachment

Patent

active

D03242790

REFERENCES:
patent: D246109 (1977-10-01), Rosaen
patent: D264617 (1982-05-01), Freeman
patent: 1956524 (1934-04-01), Byram
patent: 3289847 (1966-12-01), Rothemund
patent: 3304912 (1967-02-01), Hackman et al.
patent: 3314396 (1967-04-01), Willinger
patent: 4481905 (1984-11-01), Fonseca
patent: 4522151 (1985-06-01), Arbisi et al.
Zenco Novelty Co. Products Catalog; p. 67, Item 851, (center p.), Stem For Filter and Air Releasers.
Living World Catalog; .COPYRGT.1977; p. 24; Item 88715, Hush I.RTM. Air Pump & Filter Kit.
Metaframe Catalog No. 70; .COPYRGT.1970; p. 40; Bubble-Up Airstone, Item No. 335, (top, left corner).

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