Seismic gas shut-off valve

Details Seismic gas shut-off valve Seismic gas shut-off valve

1984-04-02

1987-01-20

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Patent

active

D02878712

REFERENCES:
patent: D103582 (1937-03-01), Murphy
patent: D180010 (1957-04-01), Britton
patent: 4278102 (1981-07-01), Kelley et al.
patent: 4336818 (1982-06-01), Dauvergne
patent: 4485832 (1984-12-01), Plemmons et al.
patent: 4565208 (1986-01-01), Ritchie et al.

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