Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-09-13
1989-03-07
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D03001741
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patent: D201933 (1965-08-01), Ruggles
patent: 1652128 (1927-12-01), Hare
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patent: 2382075 (1945-08-01), Leslie
patent: 2956496 (1960-10-01), Simblest
patent: 3021778 (1967-02-01), Slatkovski
patent: 3086442 (1963-04-01), Waldron
patent: 3580160 (1971-05-01), McCabe
Irwin Eark
Waltz Arthur
Largen James R.
Secrest Thomas W.
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