Backflow prevention sink

Details Backflow prevention sink Backflow prevention sink

2007-06-05

2007-06-05

Delehanty, Robert A. (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Sanitary fixture or housing therefor

Sink

Design Patent

active

29244839

CLAIM:
The ornamental design for a backflow prevention sink, as shown and described.

REFERENCES:
patent: D243182 (1977-01-01), Seymour et al.
patent: D255923 (1980-07-01), Rosenkranz
patent: 4440185 (1984-04-01), Wiltse
patent: D285522 (1986-09-01), Basini
patent: 4856559 (1989-08-01), Lipshultz et al.
patent: 4991655 (1991-02-01), McHugh
patent: 5217038 (1993-06-01), Pinder
patent: 5392803 (1995-02-01), Bruce
patent: 5649681 (1997-07-01), Faye
patent: D382332 (1997-08-01), Schwartz
patent: 5876000 (1999-03-01), Ismert
patent: 6021805 (2000-02-01), Horne et al.
patent: 6397878 (2002-06-01), Nolan
patent: 2003/0188779 (2003-10-01), DeGarmo
patent: 2005/0098212 (2005-05-01), DeGarmo
Picture illustrating general subject matter of a unit installed more than one year prior to the filing date of this application (Apr. 9, 2002).

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