Leveling instrument
Description
FIG. 1 is a top plan view of a leveling instrument showing my new design;
FIG. 2 is a right side elevational view, the left side elevational view being identical; and
FIG. 3 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
| 612577 | October 1898 | Smith |
| 2356311 | August 1944 | Beier |
Patent History
Patent number: D318243
Type: Grant
Filed: Mar 28, 1989
Date of Patent: Jul 16, 1991
Inventor: James Piskula (Milwaukee, WI)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Antonie D. Davis
Law Firm: Quarles & Brady
Application Number: 7/330,836
Type: Grant
Filed: Mar 28, 1989
Date of Patent: Jul 16, 1991
Inventor: James Piskula (Milwaukee, WI)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Antonie D. Davis
Law Firm: Quarles & Brady
Application Number: 7/330,836
Classifications
Current U.S. Class:
Spirit Level (D10/69)
