Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-08-15
1982-06-22
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02651190
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patent: 3795923 (1974-03-01), Thomas
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