Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-05-01
1981-03-03
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02584620
REFERENCES:
patent: D190801 (1961-07-01), Wyle et al.
patent: D229178 (1973-11-01), Mixon
patent: 3348687 (1967-10-01), Foster
patent: 3415381 (1968-12-01), Thayer
patent: 3438499 (1969-04-01), Reckers
patent: 4021347 (1977-05-01), Teller et al.
patent: 4036754 (1977-07-01), Peasley
Baldwin George H.
Largen James R.
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