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The ornamental design for a screwdriver bit, as shown and described.
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FIG. 1 is a front-right-top perspective view of a screwdriver bit, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof, the right side view being a mirror image thereof;
FIG. 5 is a top plan view thereof, the bottom plan view being a mirror image thereof;
FIG. 6 is a front-right perspective view of a screwdriver bit, showing my new design; and,
FIG. 7 is a perspective view of the screwdriver bit, wherein the broken lines showing of the screwdriver is for illustrative purposes only and forms no part of the claimed design.
Wu, Kun-Tse, Huang, Ching-Yang
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