Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-03-04
1981-12-22
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 7208, D2303
Patent
active
D02623994
REFERENCES:
patent: D42789 (1912-07-01), Stickley
patent: D231933 (1974-06-01), Andrew
patent: D251012 (1979-02-01), Owen, Jr.
patent: D251797 (1979-05-01), Andersen et al.
patent: D258684 (1981-03-01), Christophel
patent: 1645244 (1927-10-01), Klemme
Abel Mary H.
Zimmerman Valentine J.
E.K. Industries, Inc.
Kemper Catherine E.
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