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The ornamental design for a manually operated bookbinding tool, as shown. |
FIG. 1 is a front left perspective view of a manually operated bookbinding tool showing our design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevation view thereof; and,
FIG. 7 is a right side elevation view thereof.
Lin, Chien-Fu, Chiang, Jou-Chen
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