Hose coupling

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified

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Details

D23 44, D2399

Patent

active

D02654180

REFERENCES:
patent: D93306 (1934-09-01), Sutton et al.
patent: D195540 (1963-06-01), Knight
patent: D251676 (1979-04-01), Fouts
patent: D254505 (1980-03-01), Parsons et al.
patent: D258078 (1981-01-01), Gallagher et al.
Philadelphia Valve Co., Fuel Oil and Oil Heat, Jan. 1963, p. 101, New Hose Swivel.

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