Combined fan, calculator, light and clock

Details Combined fan, calculator, light and clock Combined fan, calculator, light and clock

1985-12-31

1988-01-12

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D18 6

Patent

active

D02937140

REFERENCES:
patent: D104119 (1937-04-01), Schwarz
patent: D207361 (1967-04-01), Bruns
patent: D244856 (1977-06-01), Haufa et al.
patent: 2218198 (1940-10-01), Harris
patent: 4425840 (1984-01-01), Masao

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