Combined ventilator frame and cover

Details Combined ventilator frame and cover Combined ventilator frame and cover

1976-11-08

1978-03-14

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02475081

REFERENCES:
patent: D214295 (1969-05-01), Hedgewick et al.
patent: 3005089 (1961-10-01), Robbins
patent: 3227868 (1966-01-01), Morgan
patent: 3672291 (1972-06-01), Kujawa, Jr.
patent: 3763760 (1973-10-01), Erickson
J. C. Whitney Catalog No. 347, Rec'd 5/4/76, p. E, Roof or Side Ventilator for Vans, RV's etc., top of page.

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