Airplane level

Description

FIG. 1 is a top right side perspective view of an Airplane Level showing my new design;

FIG. 2 is a top left side perspective view; and

FIG. 3 is a bottom right side perspective view thereof.

Referenced Cited
U.S. Patent Documents
D53902 October 1919 Grant
D54447 February 1920 Nelson
D55434 June 1920 Peoples
D135194 March 1943 Aronoff
2012424 August 1935 Fincke
Patent History
Patent number: D322581
Type: Grant
Filed: Feb 19, 1988
Date of Patent: Dec 24, 1991
Inventor: Al Heath (Bridge City, TX)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Gary D. Watson
Attorney: Kenneth D. Baugh
Application Number: 7/158,358
Classifications
Current U.S. Class: Spirit Level (D10/69)