Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1993-03-11
1994-11-29
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23377, D23379, D23385
Patent
active
D03529975
REFERENCES:
patent: D119797 (1940-04-01), Winkler et al.
patent: D314046 (1991-01-01), Yen
Burke Wallace R.
Griggs Dennis T.
Lichtenstein Lisa
Smartel, Inc.
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