| 摘要 |
PCT No. PCT/AU92/00277 Sec. 371 Date May 4, 1994 Sec. 102(e) Date May 4, 1994 PCT Filed Jun. 12, 1992 PCT Pub. No. WO92/21633 PCT Pub. Date Dec. 10, 1992The specification describes articles which have a three-dimensional appearance even though they comprise a two-dimensional representation of an object. The effect can be achieved by coating the two-dimensional representation with a protective coating of a clear resin of clear plastics material, having a convex external surface. The articles may be buttons or jewellery that have the appearance of being made from gem stones such as opal.
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