Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-08-28
1980-08-26
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 7207, D0708, D2308
Patent
active
D02566125
REFERENCES:
patent: 3905351 (1975-09-01), Hatfield et al.
patent: 4078542 (1978-03-01), Young et al.
patent: 4114590 (1978-09-01), Frahm
patent: 4122825 (1978-10-01), Slate
patent: 4149517 (1979-04-01), Horwinski
Greenwald William H.
Hart Richard G.
Knight Carl W.
Baldwin George S.
Kemper Catherine E.
National Utility Products Company
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