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Ernst Krauss
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Oberndorf-Aistaig, DE
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Patent Grant
Method and apparatus for machining a workpiece ultrasonically
Patent number
4,616,447
Issue date
Oct 14, 1986
Mafell-Saschinenfabrik Rudolf Mey GmbH & Co. KG
Rudiger Haas
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR