Automatic builder's level or the like

- Keuffel & Esser Company

FIG. 1 is a top left front perspective view of an automatic builder's level or the like showing my new design;

FIG. 2 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D235318 June 1975 Kooi
D235319 June 1975 Kooi
D235524 June 1975 Kooi
D235525 June 1975 Kooi
3475101 October 1969 Jeffery
Other references
  • Keuffel & Esser Cat. #10, 1976, p. 32, Ni2, Self-Leveling Level.
Patent History
Patent number: D252918
Type: Grant
Filed: Aug 19, 1977
Date of Patent: Sep 18, 1979
Assignee: Keuffel & Esser Company (Morristown, NJ)
Inventor: J. Peter E. Kooi (Succasunna, NJ)
Primary Examiner: Nelson C. Holtje
Attorney: Lionel N. White
Application Number: 5/826,093
Current U.S. Class: Transit Or Theodolite (D10/66)
International Classification: D1004;