Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1983-11-18
1986-10-21
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02863189
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patent: 3187956 (1965-06-01), Dawson
patent: 3923205 (1975-12-01), hlin
patent: 3963151 (1976-06-01), North, Jr.
patent: 4010897 (1977-03-01), Treharne
Burke Wallace R.
Vinson Brian N.
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