Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-05-05
1980-06-17
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
4252R, D2302
Patent
active
D02554810
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patent: 2758316 (1956-08-01), Schwarz et al.
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Largen James R.
Schmidt Gordon D.
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