Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-03-16
1983-11-15
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02714167
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patent: D235870 (1975-07-01), Sheehan
patent: D256943 (1980-09-01), Angolinetta
patent: 3377991 (1968-04-01), Rubert
patent: 3513978 (1970-05-01), Newsteder
patent: 3525435 (1970-08-01), Conner, Jr.
patent: 3815547 (1977-06-01), Willinger et al.
patent: 4186093 (1980-01-01), Willinger
patent: 4206719 (1980-06-01), Faris
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