Pipe plug lock unit

Details Pipe plug lock unit Pipe plug lock unit

1990-06-14

1992-09-22

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Valve or body therefor

Patent

active

D03296873

REFERENCES:
patent: D208016 (1967-06-01), Bullard
patent: D242521 (1976-11-01), Plympton
patent: D257218 (1980-10-01), Eriksson
patent: D283246 (1986-04-01), Jack
patent: D300350 (1989-03-01), Mathison
patent: D305927 (1990-02-01), Linderman et al.
patent: 3672403 (1972-06-01), Wilson et al.
patent: 4370919 (1983-02-01), Wagner
patent: 4415005 (1983-11-01), Janzen
patent: 4614206 (1986-09-01), Mathison et al.
patent: 4762151 (1988-08-01), Kinnan

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