Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-12-09
1986-01-07
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23155
Patent
active
D02821010
REFERENCES:
patent: D248043 (1978-05-01), Schade
patent: D254566 (1980-03-01), Cummins
patent: D257059 (1980-09-01), Schade
patent: 2509137 (1950-05-01), Denman
patent: 2866073 (1958-12-01), Omohundro
John Manufacturing Limited
Kemper Catherine E.
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