Demonstrator for indicating the effect of additive in engine oil and the like

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Description

FIG. 1 is an isometric view from an upper aspect of a demonstrator for indicating the effect of additive in engine oil and the like, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an end elevational view thereof;

FIG. 4 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
454165 June 1891 Dennison
1977244 October 1934 Putnam et al.
2700228 November 1955 Fainman
3133976 May 1964 Gross
3215409 November 1965 Purciello
Patent History
Patent number: D254793
Type: Grant
Filed: Jan 11, 1978
Date of Patent: Apr 22, 1980
Inventor: Clinton H. Morey (Mesa, AZ)
Primary Examiner: Melvin B. Feifer
Law Firm: Graybeal & Uhlir
Application Number: 5/868,668
Classifications
Current U.S. Class: Demonstrator Or Exhibitor (10) (D19/62); D/7157
International Classification: D1907;