Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-03-23
1977-10-18
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02461099
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Nylon Filter Corp. Brochure reed 11/25/70, p. 4, items Nos. 101 & 102, p. 5, Nos. 116 & 119.
Gifford Ernest I.
Largen James R.
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