Method of forming a tenon on one side of a metal plate member
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United States of America Patent
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Apr 8, 2014
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N/A
app pub date -
Dec 23, 2009
filing date -
Jul 20, 2009
priority date (Note) -
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Abstract
A method of forming a tenon on one side of a metal plate member by means of punching the wall of one side of the metal plate member with a punch or punches to form a protrusion and then punching the protrusion with a punch rod to extend the height of the protrusion and to deform the protrusion into a tubular configuration.
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