Fan blade

Details Fan blade Fan blade

1976-04-02

1977-12-27

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02467950

REFERENCES:
patent: D52762 (1918-12-01), Swenson
patent: D186889 (1959-12-01), Atalla et al.
patent: D187272 (1960-02-01), Twist
patent: D193242 (1964-05-01), Twist
patent: D193643 (1962-09-01), Klonoski et al.
patent: D225853 (1973-01-01), Hecht
patent: D228913 (1973-10-01), Fulton
patent: D232362 (1974-08-01), Bonifant
patent: D234517 (1975-03-01), Bonifant
patent: D235021 (1975-04-01), Fulton
patent: D237972 (1975-12-01), Bonifant

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