Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-12-14
1982-05-25
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D29 5, D2301
Patent
active
D02646170
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patent: 2726897 (1955-12-01), Dupont
patent: 3713492 (1973-01-01), Forrest
patent: 3904126 (1975-09-01), Allard
patent: 4213567 (1980-07-01), McIntire
Largen James R.
Toupal John E.
Walter Kidde & Company, Inc.
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