| 摘要 |
PCT No. PCT/AU93/00523 Sec. 371 Date Aug. 26, 1994 Sec. 102(e) Date Aug. 26, 1994 PCT Filed Oct. 12, 1993 PCT Pub. No. WO94/08665 PCT Pub. Date Apr. 28, 1994A ball structure (1) is disclosed which comprises three panels (2, 3, 4) of identical shape which can be joined to form a spherical ball. The panels (2, 3, 4) can be cut from a template and their shape is adapted to minimize wastage of a substrate material cut according to a pattern provided by the template.
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