Method for the production of a piston for an internal combustion engine
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United States of America Patent
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May 5, 2015
Grant Date -
Jul 24, 2014
app pub date -
Mar 25, 2014
filing date -
Dec 19, 2009
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Abstract
A method for producing a piston from an upper piston part and a lower piston part. A strip- or plate-shaped semifinished product made of a metal material is provided, from which an annular upper piston part or an annular blank is stamped out, which blank is finished to form an upper piston part, wherein the upper piston part is connected to a lower piston part to form a piston.
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