Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-04-11
1980-05-27
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
285175, 285423, D2301
Patent
active
D02551454
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Dennemeyer John J.
Largen James R.
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