Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-04-28
1980-03-18
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02545055
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patent: D246855 (1978-01-01), Treloar
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patent: 1248558 (1917-12-01), Seribner
patent: 1461958 (1923-07-01), Arnold
patent: 3603621 (1971-09-01), Parsons
patent: 3640552 (1972-02-01), Demler
Atkinson, Jr. William G.
Parsons Frederick L.
Brumbaugh Granville M.
Largen James R.
Parsons Frederick L.
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