Wedding ring with breaking device
作者： Thierry Dubert , Frederic Voeltzel , Pierre Voeltzel , Philippe Voeltzel
DOI:
关键词:
摘要: The invention concerns a device adaptable to any ring, wedding ring or band, said band (wedding the like) is bored with at least hole right through whole cross-section. hole(s) (are) such that remaining thickness slight whatever direction of relative applicable in all cases where calibration breaking strength on useful.
lens.org 参考文章(5)
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