Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-12-05
1983-04-26
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02687780
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patent: 3455507 (1969-07-01), Ryder et al.
patent: 3899134 (1975-08-01), Wagner
patent: 3993250 (1976-11-01), Shurp
patent: 4049197 (1977-09-01), Brouwer
patent: 4162037 (1979-07-01), Koyama
Acme Burgess, Inc.
Darbo Howard H.
Largen James R.
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