Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-07-20
1981-03-17
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 72, D23136, D23139, D23152, D23167, D2304
Patent
active
D02586096
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patent: D244032 (1977-04-01), Deetz et al.
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patent: 3999304 (1976-12-01), Doty
patent: 4011662 (1977-03-01), Davis et al.
patent: 4122612 (1978-10-01), Mrofchak
patent: 4137647 (1979-02-01), Clark, Jr.
patent: 4156973 (1979-06-01), Bede
patent: 4183150 (1980-01-01), Nash
Largen James R.
Seventy Seven Ltd.
Sheridan Philip H.
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