Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Combined heating and cooling or with diverse element
Patent
1985-12-19
1988-08-02
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Combined heating and cooling or with diverse element
D23342
Patent
active
D02970449
REFERENCES:
patent: 3012762 (1961-12-01), Norris
patent: 3977467 (1976-08-01), Northrup, Jr.
patent: 4072187 (1978-02-01), Lodge
Ade Stanley G.
Battison Adrian D.
Del-Air Systems Ltd.
Kemper Catherine E.
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