Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1975-06-04
1977-03-01
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02435314
REFERENCES:
patent: 2834466 (1958-05-01), Hament
patent: 3266787 (1966-08-01), Eckert
patent: 3430934 (1969-03-01), Weishaupt
patent: 3506248 (1970-04-01), Starbuck et al.
patent: 3543937 (1970-12-01), Choun
patent: 3589518 (1971-06-01), Brebion
patent: D217245 (1970-04-01), Axelrod
patent: D232237 (1974-07-01), LaBorde
Franklin Rufus M.
Largen James R.
Norton Company
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