Vertical plumb tool

Description

FIG. 1 is a top, front, and left side perspective view of a vertical plumb tool showing my new design;

FIG. 2 is rear elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a top plan view; and

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D32156 January 1900 Johnson
D171317 January 1954 Von Dukhe
1229356 June 1917 Watkins
1308699 July 1919 Cusick
1707593 April 1929 Arbuckle
2624953 January 1953 Newcomb
2635350 April 1953 Bettega
3545091 December 1970 Sebastiani
4202108 May 13, 1980 Adams, Jr. et al.
4443954 April 24, 1984 Clark
4829676 May 16, 1989 Waldron
Foreign Patent Documents
1141672 September 1957 FRX
555055 October 1957 FRX
Patent History
Patent number: D323997
Type: Grant
Filed: Oct 3, 1988
Date of Patent: Feb 18, 1992
Assignee: Thomas K. Stevens (El Cerrito, CA)
Inventors: James C. Masters (Walnut Creek, CA), Thomas K. Stevens (El Cerrito, CA)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Antoine D. Davis
Attorney: Harris Zimmerman
Application Number: 7/251,872
Classifications
Current U.S. Class: Spirit Level (D10/69)