Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1976-11-10
1978-05-23
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02479478
REFERENCES:
patent: D77935 (1929-03-01), Carlson
patent: D228728 (1973-10-01), Bergstrom
patent: D240536 (1976-07-01), Christophel
patent: D242543 (1976-11-01), Betenbaugh, Jr.
patent: 1747259 (1930-02-01), Pierce
patent: 3452737 (1969-07-01), Pellegrino et al.
patent: 3469570 (1969-09-01), Wright
patent: 3901212 (1975-08-01), Stites
patent: 3938496 (1976-02-01), Kampf et al.
Isler William
Largen James R.
Production Experts, Inc.
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