Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-07-29
1980-02-26
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02543222
REFERENCES:
patent: D149818 (1948-06-01), Jaros
patent: D183042 (1958-06-01), Fuglie
patent: 3157382 (1964-11-01), Perry
patent: 3709256 (1973-01-01), Gore et al.
patent: 3768777 (1973-10-01), Heehler
patent: 3918680 (1975-11-01), Stevens, Jr.
Barish Benjamin J.
Largen James R.
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