Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-07-24
1981-11-10
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02617994
REFERENCES:
patent: D188750 (1960-09-01), Swann
patent: D198018 (1964-04-01), Wadsworth
patent: D198431 (1964-06-01), Armstrong
patent: D199235 (1964-09-01), Tiller
patent: D200461 (1965-03-01), Mox
patent: D224108 (1972-07-01), Doman
patent: D226910 (1973-05-01), Doman
patent: D250202 (1978-11-01), Doman
patent: 3995327 (1976-12-01), Hendrick
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