Combined protractor, triangle, compass and beam compass

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Description

FIG. 1 is a top plan view of the combined protractor, triangle, compass and beam compass showing my new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is an end elevation view thereof; and,

FIG. 5 is the other end elevation thereof.

Referenced Cited
U.S. Patent Documents
D194242 December 1962 Robbins
843459 February 1907 Humes
932281 August 1909 Humes
1121303 December 1914 Smith
2178796 November 1939 Kormann
2292094 August 1942 Thomas
2495558 January 1950 Walton
3321835 May 1967 Curtis
Patent History
Patent number: D252615
Type: Grant
Filed: Mar 21, 1977
Date of Patent: Aug 14, 1979
Inventor: Gilbert T. Lopez (Boulder, CO)
Primary Examiner: Nelson C. Holtje
Attorney: Max L. Wymore
Application Number: 5/779,943
Classifications
Current U.S. Class: Combined (D10/62); Angle Or Direction (7) (D10/65)
International Classification: D1004;