Four way corner level

Description

FIG. 1 is a front perspective view of a four way corner level showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D189590 January 1961 White
D253581 December 4, 1979 VanderWerf
D255504 June 24, 1980 VanderWerf
D257330 October 14, 1980 VanderWerf
D261626 November 3, 1981 VanderWerf
D269663 July 12, 1983 Smith
2906031 September 1959 Rice
3266155 August 1966 Staub
3545091 December 1970 Sebastiani
3820249 June 1974 Stone
3826013 July 1974 Baher
Foreign Patent Documents
67128 October 1913 CHX
Patent History
Patent number: D288540
Type: Grant
Filed: May 29, 1984
Date of Patent: Mar 3, 1987
Inventor: Robert H. VanderWerf (Redding, CA)
Primary Examiner: Nelson C. Holtje
Application Number: 6/614,970
Classifications
Current U.S. Class: Spirit Level (D10/69)