Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Treatment
Patent
1997-03-20
1998-06-09
Douglas, Alan P.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Treatment
2301
Patent
active
D03950727
REFERENCES:
patent: D246109 (1977-10-01), Rosaen
patent: D374476 (1996-10-01), Page et al.
patent: 2975805 (1961-03-01), Horn
patent: 3421629 (1969-01-01), Hehr
patent: 4272370 (1981-06-01), Cunning
patent: 4722480 (1988-02-01), Hogeland
patent: 4936061 (1990-06-01), Palma
patent: 5595027 (1997-01-01), Vail
Douglas Alan P.
Taylor Robin V.
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