Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-02-03
1978-05-23
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 7207, D2303, D0708
Patent
active
D02479737
REFERENCES:
patent: D228728 (1973-10-01), Bergstrom
patent: D240536 (1976-07-01), Christophol
patent: 2743720 (1956-05-01), Dollinger
patent: 2789554 (1957-04-01), Dupler
patent: 3452737 (1969-07-01), Pellegrino et al.
patent: 3901212 (1975-08-01), Stites
patent: 3938496 (1976-02-01), Kampf et al.
Dual Action Fireplace Furnace sold by Stone Castle, Inc., 6160-90th Ave., S.E., Mercer Island, Washington, 98040.
"Elegance 1" by General Products Corp. Inc., 150 Ardale St., West Haven, Conn. 06516.
Friederichs Norman P.
Largen James R.
Thermograte, Inc.
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