Aerator

Details Aerator Aerator

1994-05-02

1995-07-04

Seifert, Ralf T.

Machines not elsewhere specified

Pump or compressor

Aquarium type

Patent

active

D03599620

REFERENCES:
patent: D214961 (1969-08-01), Levin
patent: D255354 (1980-06-01), Goldman et al.
patent: D294360 (1988-02-01), Levin
patent: D327482 (1992-06-01), Wang
patent: D338018 (1993-08-01), Willinger et al.
patent: 2552261 (1951-05-01), Coughlin
patent: 2919120 (1959-12-01), Baxter
patent: 2960321 (1960-11-01), Stoots, Jr.
patent: 3189334 (1965-06-01), Bell
patent: 3216650 (1965-11-01), Thyreen
patent: 3374990 (1968-03-01), Gray
patent: 4627797 (1986-12-01), Rill, Jr.
patent: 5231784 (1993-08-01), Radmanovich
Copy of an abstract, from Oct. 20, 1987 Official Gazette, of U.S. Design Pat. No. 292,439, invented by Arno Richter.

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