Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-03-30
1981-02-24
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02583801
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patent: 3361300 (1968-01-01), Kaplan
patent: 3632046 (1972-01-01), Hengesbach
Briar Industries, Inc.
Largen James R.
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