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
Foreign 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 |
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
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)