Ventilator

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Description

FIG. 1 is a top plan view of a ventilator showing my new design;

FIG. 2 is an elevational view taken from one side thereof, the opposite side being the same as the side shown;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D34037 February 1901 Reynolds
D191018 August 1961 Kearney et al.
D193642 September 1962 Patterson
838637 December 1906 Mittinger, Jr.
2379638 July 1945 Hughes et al.
2571513 October 1951 Ammerman
2823598 February 1958 Jenn
2824507 February 1958 Alldritt et al.
3168780 February 1965 Breidert
3386368 June 1968 Fielding
3783767 January 1974 Stalker
Other references
  • Air Cond., Heating & Ventilation, Apr. 1968, p. 15, "Strong Silent Type", item. Heating & Air Conditioning Contractor, p. 71, Mar. 1964, "Spun Line Roof Exhausters", items.
Patent History
Patent number: D259951
Type: Grant
Filed: Jun 11, 1979
Date of Patent: Jul 21, 1981
Inventor: George M. Briedert (Agua Dulce, CA)
Primary Examiner: James R. Largen
Attorney: James E. Brunton
Application Number: 6/47,921
Classifications
Current U.S. Class: D23/153
International Classification: D2304;