发明名称 Necklace extension
摘要 An extension for joining opposite ends of jewelry, especially necklaces. The extension including a central region joining opposed spiral regions. Each of said spiral regions being descending spirals of approximately one and one half revolutions and decreasing in radius by about one half for each one half revolution. The spiral regions are reverse mirror images. The extensions can be utilized individually or as multiples to modify the length of the jewelry.
申请公布号 US2008022719(A1) 申请公布日期 2008.01.31
申请号 US20070904371 申请日期 2007.09.27
申请人 MCMAHON SHERRE S 发明人 MCMAHON SHERRE S.
分类号 A44C5/04;A44C5/00;A44C15/00;A44C25/00 主分类号 A44C5/04
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