Axial fan

Details Axial fan Axial fan

1986-07-02

1988-09-20

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D23370, D23371, D23385

Patent

active

D02977613

REFERENCES:
patent: D187699 (1960-04-01), van Rijn
patent: D209250 (1967-11-01), Grad
patent: D231355 (1974-04-01), Papst
patent: 3204546 (1965-09-01), Krell
patent: 4225285 (1980-09-01), Sturm
patent: 4482302 (1984-11-01), Grignon
patent: 4564335 (1986-01-01), Harmsen et al.
patent: 4568243 (1986-02-01), Schubert et al.

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