Pressure switch

Details Pressure switch Pressure switch

2007-12-11

2007-12-11

Sikder, Selina (Department: 2912)

Equipment for production, distribution, or transformation of ene

Distribution, modification or control

Switch or casing therefor

Design Patent

active

29270734

CLAIM:
The ornamental design for a pressure switch, as shown and described.

REFERENCES:
patent: 3786210 (1974-01-01), Byam
patent: 3916130 (1975-10-01), Cade
patent: 4081621 (1978-03-01), Hartley
patent: D280501 (1985-09-01), Walters
patent: 4626636 (1986-12-01), Hickman et al.
patent: D308193 (1990-05-01), Gaalswyk
patent: D430268 (2000-08-01), Hiramatsu et al.
patent: D437295 (2001-02-01), Gunji et al.
patent: D456290 (2002-04-01), Gunji et al.
patent: D497145 (2004-10-01), Seo
patent: 7071832 (2006-07-01), Miyamoto et al.
patent: 7186934 (2007-03-01), Nakajima
patent: 2004/0187585 (2004-09-01), Miyamoto et al.

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