Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1984-06-27
1987-02-17
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
Patent
active
D02883546
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patent: D216310 (1969-12-01), Fortuno
patent: D241846 (1976-10-01), Ribits et al.
patent: D242859 (1976-12-01), Gruber
patent: D243325 (1977-02-01), Krause
patent: D261798 (1981-11-01), Stairs, Jr.
Crane & Co.
Largen James R.
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