Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-10-12
1980-06-10
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02553791
REFERENCES:
patent: D244607 (1977-06-01), Riley
patent: D244608 (1977-06-01), Riley
patent: 1889238 (1932-11-01), Clark
patent: 4084578 (1978-04-01), Ishibashi
Drucker William A.
Kemper Catherine E.
S. W. Hart & Co.
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