发明名称 Invisible mounting method for diamonds - uses minute gap between edges prior to soldering
摘要 <p>All diamonds in the mounting are cut to give identical peripheral measurements. Minute gaps between edges, enable invisible mounting when soldered. Mounting is e.g. of four square diamonds (1), which are cut to provide absolute identical peripheral measurements. Small facets (3) have a max. height of 0.3 mm. The gap width between facets is less than 0.1mm. Soft soldering method is used, whilst surplus solder is removed e.g. by boiling in acid.</p>
申请公布号 NL8700472(A) 申请公布日期 1988.09.16
申请号 NL19870000472 申请日期 1987.02.25
申请人 D. DRUKKER & ZN. N.V. TE AMSTERDAM EN CLAUDE BASTOEN TE COURBEVOIE, FRANKRIJK. 发明人
分类号 A44C17/04;(IPC1-7):A44C17/04 主分类号 A44C17/04
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