Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-08-26
1980-05-20
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02550458
REFERENCES:
patent: D220263 (1971-03-01), Hughes
patent: D221850 (1971-09-01), Anderson
patent: 3122501 (1964-02-01), Hultgren
patent: 3312351 (1967-04-01), Kasten
patent: 3502221 (1970-03-01), Butterfield
Nylon Filter Corp. Brochure, p. 7, Item No. 141.
Largen James R.
Toren David
Ultrafilter GmbH
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