Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-04-16
1980-06-24
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02555964
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patent: 3086543 (1963-04-01), McAuley
patent: 3346887 (1967-10-01), Sommer
patent: 3533111 (1970-10-01), Bowman et al.
patent: 3894302 (1975-07-01), Lasater
patent: 3968815 (1976-07-01), Legg nee Jouve et al.
Largen James R.
Secrest T. W.
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