Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-05-27
1983-06-07
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02692929
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patent: 3993444 (1976-11-01), Brown
patent: 4294778 (1981-10-01), DeLuca
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