Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-03-25
1982-09-07
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02661039
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patent: 3287918 (1966-11-01), Stewart
patent: 3335571 (1967-08-01), Davis
patent: 3894398 (1975-07-01), Fritz et al.
patent: 4199274 (1980-04-01), Loth
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