Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-10-02
1981-07-14
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02598922
REFERENCES:
patent: D57542 (1921-04-01), Potstada
patent: D71187 (1926-10-01), Hicks
patent: D225851 (1973-01-01), Cowan
Gilliam Frank D.
Kemper Catherine E.
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