Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-09-12
1981-10-06
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02611716
REFERENCES:
patent: D101535 (1936-10-01), Karstadt
patent: D185618 (1959-06-01), Teague et al.
patent: D185643 (1959-07-01), Magid et al.
patent: D191697 (1961-11-01), Chapman
patent: D199021 (1964-09-01), Stairs, Jr.
patent: D224108 (1972-07-01), Doman
patent: D237884 (1975-12-01), Korol
patent: 4162548 (1979-07-01), Groombridge et al.
Gruber Systems, Inc.
Largen James R.
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