| 摘要 |
A multi-pronged thumbtack which includes a head and a plurality of tines projecting from the head in the same direction to assure that paper impaled upon the tines will not be able to rotate around the axis of any one of the tines. In general, the head has at least one monoplanar side from which the tines extend codirectionally, and three tines are preferably disposed at the corners of an equilateral triangle.
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