Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-06-11
1983-12-20
Largen, James B.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02719002
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patent: 3225679 (1965-12-01), Meyer
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patent: 3424233 (1969-01-01), Meekler
patent: 3665969 (1972-05-01), Clifford
patent: 4020753 (1977-05-01), Efstratis
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