Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1984-07-06
1986-12-02
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02870436
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patent: D278739 (1985-05-01), Galloway
patent: 3712333 (1973-01-01), Semon
patent: 4257448 (1981-03-01), Shiu et al.
patent: 4347867 (1982-09-01), Peters
patent: 4373548 (1983-02-01), Chou
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