Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-03-21
1978-07-18
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02485648
REFERENCES:
patent: D65301 (1924-07-01), Ross
patent: D169405 (1953-04-01), Young
patent: D183176 (1958-07-01), Morhard
patent: D184342 (1959-02-01), Dreyfuss
patent: D235099 (1975-05-01), Doman
patent: 3459223 (1969-08-01), Katva
Kohler Co.
Largen James R.
Seidel Arthur H.
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