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The ornamental design for a ruler, as shown and described. |
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FIG. 1 is a top plan view of a ruler showing my new design;
FIG. 2 is a front elevational view;
FIG. 3 is a rear elevational view;
FIG. 4 is a bottom plan view;
FIG. 5 is a right side elevational view;
FIG. 6 is another right side elevational view, with the upper housing tilted towards the rear;
FIG. 7 is another right side elevational view, with the upper housing tilted towards the front;
FIG. 8 is a left side elevational view;
FIG. 9 is another left side elevational view, with the upper housing tilted towards the front; and
FIG. 10 is another left side elevational view thereof, with the upper housing tilted towards the rear.
| Patent | Priority | Assignee | Title |
| Patent | Priority | Assignee | Title |
| 1980884, | |||
| 2331298, | |||
| 3118233, | |||
| 4586265, | Oct 29 1984 | HOPKINS, WILLIAM GEORGE | Perspective drawing apparatus |
| D277365, | Jun 23 1982 | Proportional plotting device |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 16 1989 | HOELTERSCHEIDT, SIEGFRIED | Walter Henkels GmbH | ASSIGNMENT OF ASSIGNORS INTEREST | 005123 | /0603 | |
| May 08 1989 | Walter Henkels GmbH | (assignment on the face of the patent) | / |
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