Air valve

Details Air valve Air valve

1995-08-21

1996-11-26

Reid, Stella

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Valve or body therefor

D23245

Patent

active

D03759997

REFERENCES:
patent: D86452 (1932-03-01), Grandahl
patent: D105170 (1937-06-01), Hallum
patent: D142703 (1945-10-01), Collins
patent: D143302 (1945-12-01), Goddeau
patent: D228554 (1973-10-01), Magorien
patent: D267625 (1983-01-01), Dark
patent: 3337181 (1967-08-01), Wennerstrom
patent: 4674496 (1987-06-01), Svadjian et al.

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