Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-03-09
1983-01-11
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02675846
REFERENCES:
patent: 4131105 (1978-12-01), Moncrieff-Yeates
patent: 4309979 (1982-01-01), Burch
Haugen Orrin M.
Kemper Catherine E.
Nikolai Thomas J.
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