Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-05-26
1978-11-28
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02504189
REFERENCES:
patent: D231933 (1974-06-01), Andrew
patent: D241548 (1976-09-01), Rheingold et al.
patent: D241646 (1976-09-01), Lilly et al.
Burke Wallace R.
Kemper Catherine
Zarley Donald H.
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