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SEIFRIED MATTHIAS

DE·1 granted patent·6 citations·filing 2010–2010

Technology mixB21J1 B21K1 B23K1 B23P1 F02F1 Y10T1

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0175US8631572B2Method for the production of a piston for an internal combustion engineSEIFRIED MATTHIAS·Filed 2010·Granted Jan 21, 2014·6 cites·5 claims

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