Oil burner preheater unit

Details Oil burner preheater unit Oil burner preheater unit

1991-07-19

1993-12-07

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Patent

active

D03421317

REFERENCES:
patent: D190846 (1961-07-01), Ellefson
patent: 3604891 (1971-09-01), Cohen
patent: 4541900 (1985-09-01), Mase
patent: 4563572 (1986-01-01), Hager
Fuel and Oil Heat, Feb. 1961, p. 37, Fuel Oil Preheater.
The Picture Book of Symbols, .COPYRGT.1956, p. 20, Fixed Star, bottom right side of page.

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