Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-02-02
1983-11-01
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02712350
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patent: D235206 (1975-05-01), Betrand
patent: D240731 (1976-07-01), Free et al.
patent: 3342335 (1967-09-01), Gamundi et al.
patent: 3342340 (1967-09-01), Shindell
patent: 3950253 (1976-04-01), Stern
patent: 4271015 (1981-06-01), Moore
patent: 4287057 (1981-09-01), Stanley
patent: 4364828 (1982-12-01), Ward
Largen James R.
Weiss Harry M.
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