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Robert A. Testin
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Zionsville, IN, US
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last 30 patents
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Patent Grant
Method and apparatus for expansion forming a workpiece using an ext...
Patent number
6,338,189
Issue date
Jan 15, 2002
Allison Engine Company, Inc
Raymond Ruiwen Xu
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...