Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1983-06-13
1986-08-05
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02849895
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patent: D227883 (1973-07-01), Huthsing, Jr. et al.
patent: D250638 (1978-12-01), Fetty
patent: 1121307 (1914-12-01), Thebaud
patent: 2828146 (1958-03-01), Abbey
patent: 2834613 (1958-05-01), Snyder
patent: 4036469 (1977-07-01), Dalton
Largen James R.
Ross Operating Valve Company
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