Solar powered ventilating fan for welding helmets

Details Solar powered ventilating fan for welding helmets Solar powered ventilating fan for welding helmets

1987-08-21

1990-06-05

Lucas, Susan J.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D13102

Patent

active

D03084167

REFERENCES:
patent: D252767 (1979-08-01), Odell et al.
patent: 3735423 (1973-05-01), Droz
patent: 3881198 (1975-05-01), Waters
patent: 4172294 (1979-10-01), Harris
patent: 4744106 (1988-05-01), Wang

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