Variable grade level

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Description

FIG. 1 is a left, front perspective view of a variable grade level showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side being a mirror image thereto.

The broken lines shown in FIG. 1 are not a part of the design sought to be patented and are included merely to show environmental structure.

Referenced Cited
U.S. Patent Documents
D132550 May 1942 Scifres
D171317 January 1954 Von Duyke
346519 August 1886 Tybjerg
886333 April 1908 Southward
899269 September 1908 Staley
922960 May 1909 Schatz
Patent History
Patent number: D267551
Type: Grant
Filed: Dec 23, 1980
Date of Patent: Jan 11, 1983
Inventor: Daniel Z. Seyler (Phillipsburg, NJ)
Primary Examiner: Nelson C. Holtje
Attorneys: Frederick A. Zoda, John J. Kane, Albert Sperry
Application Number: 6/219,776
Classifications
Current U.S. Class: Angle Or Direction (7) (D10/65); Spirit Level (D10/69)
International Classification: D1004;