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
D2303
Patent
active
D02566133
REFERENCES:
patent: D212947 (1968-12-01), Toerge et al.
patent: D226355 (1973-02-01), Eld
Haugen Orrin M.
Kemper Catherine E.
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