Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-02-23
1983-10-04
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D12317, D2301
Patent
active
D02708566
REFERENCES:
patent: D141914 (1945-07-01), Benson
patent: D190773 (1961-06-01), Koch
patent: D219446 (1970-12-01), Arros
patent: D234042 (1975-01-01), Barton
patent: D243520 (1977-03-01), Brown
patent: D251674 (1979-04-01), Sayward
patent: 3330439 (1967-07-01), Moormen
patent: 3552599 (1971-01-01), Redding
patent: 3662918 (1972-05-01), Crawford et al.
patent: 4134643 (1979-01-01), Hellquist
Peets Robert
Preston Burton L.
Sigler James A.
Largen James R.
Mansfield Sanitary Inc.
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