Pressure cooker regulator

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Description

FIG. 1 is a top plan view of a pressure cooker regulator showing our new design;

FIG. 2 is a side elevational view thereof, the side opposite being identical thereto;

FIG. 3 is an end elevational view thereof, the end opposite being identical thereto; and

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
63816 April 1867 Shaffer
D136263 August 1943 Vischer, Jr.
D162743 April 1951 Lueneburg
D185912 August 1959 Hvale
D230690 March 1974 Aries
D240612 July 1976 Becker
Patent History
Patent number: D254769
Type: Grant
Filed: Apr 10, 1978
Date of Patent: Apr 22, 1980
Assignee: National Presto Industries, Inc. (Eau Claire, WI)
Inventors: Melvin H. Boldt (Glenview, IL), Thurber H. Morrison (Evanston, IL), James P. Stevens (Oak Park, IL)
Primary Examiner: Winifred E. Herrmann
Attorney: Paul A. Welter
Application Number: 5/895,283
Classifications
Current U.S. Class: D/7129; D 7/86; D/7132
International Classification: D0702; D1004;