Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-12-11
1983-08-16
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02701782
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patent: 3977610 (1976-08-01), Royer
Berkan-Heck Company
Jacobs Mark C.
Largen James R.
West Robert
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