Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-04-17
1981-01-13
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 6 73, D2302
Patent
active
D02578794
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patent: D179397 (1956-12-01), Mills
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patent: 3011179 (1961-12-01), Hussey
patent: 3040335 (1962-06-01), Gellmann
patent: 3512187 (1970-05-01), Thomas et al.
patent: 3769638 (1973-11-01), Clanan
patent: 3829908 (1974-08-01), Thomas
Fay Robert J.
Largen James R.
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