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United States of America Patent
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Oct 23, 2007
Grant Date -
Nov 3, 2005
app pub date -
Apr 29, 2005
filing date -
Apr 30, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sheet package body P has a first package body 1 and a second package body 2. The first package body 1 is disposed on the second package body 2 by overlapping in part, said overlapped portion L is set in a double chain stitch sewing machine and is sewn. A stitching D of chain stitch is formed said portion L. By pulling the sewing end portion 4a of the looper thread 4 forming the stitching D of chain stitch, the stitching D of chain stitch gradually unravels from the sewing end portion, and the both package bodies 1, 2 are separated from each other.
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