Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-08-01
1979-07-31
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02525267
REFERENCES:
patent: 471038 (1892-03-01), Trecy
patent: 540934 (1895-06-01), Weblen
patent: 633466 (1899-09-01), Miskimen, Jr.
patent: 646853 (1900-04-01), Loy
Burke Wallace R.
Kemper Catherine
Redmond Kevin
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