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Heinz Oppermann
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Dusseldorf, DE
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last 30 patents
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Apparatus for measuring stress distribution across the width of fle...
Patent number
4,300,403
Issue date
Nov 17, 1981
Betriebsforschungs Institut VDeh
Bernd Berger
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...