Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-04-25
1980-07-15
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02559269
REFERENCES:
patent: D224534 (1972-08-01), Dupler
patent: D231933 (1974-06-01), Andrew
patent: D251385 (1979-03-01), Zimmer
patent: D251501 (1979-04-01), Peterman
patent: 1706572 (1929-03-01), Glenn
Goldsmith S. Delvalle
Kemper Catherine E.
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