Liquid level detector

Description

FIG. 1 is a top, front, and left side perspective view of a liquid level detector showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view; and

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D54584 March 1920 Blood
D218707 September 1970 DiPinto
D293558 January 5, 1988 Andreasson
4638666 January 27, 1987 Wong et al.
Patent History
Patent number: D312219
Type: Grant
Filed: Mar 10, 1988
Date of Patent: Nov 20, 1990
Assignee: Waterwatch, Inc. (St. Louis, MO)
Inventors: Ryder Pratt (St. Louis, MO), George H. Fathauer (Tempe, AZ)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Law Firm: Kalish & Gilster
Application Number: 7/166,155
Classifications