Safety valve

Details Safety valve Safety valve

1996-05-24

1998-02-17

Shooman, Ted

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Valve or body therefor

2301

Patent

active

D03909166

REFERENCES:
patent: D223094 (1972-03-01), Coleman et al.
patent: D266019 (1982-08-01), Crossman
patent: D304817 (1989-11-01), Earley et al.
patent: D334616 (1993-04-01), Nimmo
patent: 968394 (1910-08-01), Overturf
patent: 1237041 (1917-08-01), Hilding
patent: 1433643 (1922-10-01), Overlander
patent: 4642012 (1987-02-01), Blucher et al.
John Simmons Co. Cat 42--Pipe Fittings Valves Heating Material Plumbing Supplies. p. 250--No. SP-150 Plain vent cap, c. 1938.
Fleck Company Plumbing Supplies Cat. 58, p. 312--No. 800 Mushroom Type Vent, c 1947.

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