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The ornamental design for a combined writing board, calculator and writing instrument for attachment to an automobile steering wheel, as shown and described. |
FIG. 1 is a front elevational view of a combined writing board, calculator and writing instrument for attachment to an automobile steering wheel showing my new design;
FIG. 2 is a front elevational view;
FIG. 3 is a rear elevational view;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a bottom plan view; and,
FIG. 7 is a top plan view thereof.
FIGS. 2 through 7 have been drawn to an enlarged scale with respect to FIG. 1. The steering wheel depicted by means of broken lines in FIG. 1 is shown for illustrative purposes only and forms no part of the claimed design.
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