Circular navigational rule aid
Description
FIG. 1 is a pictorial representation of a face of a circular navigational rule aid, showing my new design.
The article is a single flat sheet of conventional thickness.
Referenced Cited
U.S. Patent Documents
| D135282 | March 1943 | Green |
| 1145020 | July 1915 | Hill |
| 3747845 | July 1973 | Portuesi |
| 3855706 | December 1974 | Price |
Patent History
Patent number: D271382
Type: Grant
Filed: Sep 11, 1981
Date of Patent: Nov 15, 1983
Inventor: Jerome E. Stein (San Diego, CA)
Primary Examiner: Louis S. Zarfas
Attorney: John L. Haller
Application Number: 6/301,194
Type: Grant
Filed: Sep 11, 1981
Date of Patent: Nov 15, 1983
Inventor: Jerome E. Stein (San Diego, CA)
Primary Examiner: Louis S. Zarfas
Attorney: John L. Haller
Application Number: 6/301,194
Classifications
Current U.S. Class:
Angle Or Direction (7) (D10/65);
Rotary (D18/10)
International Classification: D1004;
International Classification: D1004;
