Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-12-18
1981-01-27
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02580764
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Boughton Kenneth W.
Maurer Richard
Wiedenbeck Roger D.
Beaman Townsend F.
Largen James R.
The Johnson Corporation
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