Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Fitting
Patent
1998-11-03
2000-05-23
Douglas, Alan P.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Fitting
2301
Patent
active
D04256050
REFERENCES:
patent: D29796 (1898-12-01), Lane
patent: D47309 (1915-05-01), Terrell
patent: D217247 (1970-04-01), Brown
patent: D314815 (1991-02-01), Paulsson
patent: D367538 (1996-02-01), Varin
patent: D369653 (1996-05-01), Zaccagni
patent: D407831 (1999-04-01), Gifford
Dahlstrom Metal Mouldings and Shapes Catalog No. 12, p. 149, Extruded shape nos. X20338 and X20019, Dec. 1969.
Douglas Alan P.
Hecker Reid
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