Topping valve

Details Topping valve Topping valve

2001-12-04

2003-02-18

Holtje, Nelson C. (Department: 2913)

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Valve or body therefor

Design Patent

active

D0470570

CLAIM:
The ornamental design for a topping valve, as shown and described herein.

REFERENCES:
patent: 2772692 (1956-12-01), Russell
patent: 2824570 (1958-02-01), Silverman et al.
patent: 2942614 (1960-06-01), Lardner
patent: 3995653 (1976-12-01), Mackal et al.
patent: 4015622 (1977-04-01), Pagani
patent: 4579141 (1986-04-01), Arff
patent: 5203831 (1993-04-01), Lind et al.
patent: 5941272 (1999-08-01), Feldman
patent: 6036169 (2000-03-01), Wass

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