Knife gate valve

Details Knife gate valve Knife gate valve

1988-09-30

1992-01-21

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Valve or body therefor

Patent

active

D03233766

REFERENCES:
patent: 1054150 (1913-02-01), Thorsby
patent: 1801960 (1931-04-01), Houser
patent: 2449145 (1948-09-01), Rosmait
patent: 2913220 (1959-11-01), Cover
patent: 3001758 (1961-09-01), Ringgenberg
patent: 3069129 (1962-12-01), Grove
patent: 3158352 (1964-11-01), Grove
patent: 3333814 (1967-08-01), Sargent
patent: 3353786 (1967-11-01), Combes
patent: 3386151 (1968-06-01), Combes
patent: 3921957 (1975-11-01), Freeman
patent: 4651973 (1987-03-01), Oliver
patent: 4679770 (1987-07-01), Liberman
patent: 4881719 (1989-11-01), Bowman

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