Pressure vessel for curing plastic dentures

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Description

FIG. 1 is an elevation view of a pressure vessel for curing plastic dentures showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and

FIG. 4 is a cross-section taken along line 4--4 of FIG. 2.

Referenced Cited
U.S. Patent Documents
D149898 June 1948 Meister
D194650 February 1963 Gold
1230013 June 1917 Morwitz
1372190 March 1921 Randall et al.
2955530 October 1960 Nilo
3450039 June 1969 Ashbrook
Patent History
Patent number: D251683
Type: Grant
Filed: Jan 23, 1978
Date of Patent: Apr 24, 1979
Inventors: John W. Mitchell, Sr. (Gardena, CA), Kenneth H. Oyama (Gardena, CA), John K. Lawler, deceased (LATE OF Gardena, CA), by Doris G. Lawler, executrix (Gardena, CA)
Primary Examiner: Bernard Ansher
Attorney: Howard L. Johnson
Application Number: 5/871,515
Classifications
Current U.S. Class: D24/4; Molding Or Casting (D15/135)
International Classification: D2402;