Air valve for pipelines

Details Air valve for pipelines Air valve for pipelines

1976-03-15

1977-11-29

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2301

Patent

active

D02465337

REFERENCES:
patent: D100707 (1936-08-01), McCracken
patent: D106585 (1937-10-01), Russel
patent: D115543 (1939-07-01), Cornell, Jr.
patent: 1261044 (1918-04-01), McCracken
patent: 3002522 (1961-10-01), Klinefetter
patent: 3834415 (1974-09-01), Herron

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