Metal manufacturing method, apparatus of the same and metal object
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United States of America Patent
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Nov 26, 2013
Grant Date -
May 19, 2011
app pub date -
Nov 11, 2010
filing date -
Nov 13, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
When manufacturing a ring and a pendant from a single metal plate, the number of the twist is determined so that a predetermined feature pattern may occurs regardless size on the surface of a male ring and a female ring. The feature pattern depends on the method of the laminating of two or more metal plates, the kind of metal plate, thickness, etc. for example. The number of times of twist concerned is determined based on these information.
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