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Lothar Heymanns
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Rheydt-Odenkirchen, DE
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Patent Grant
Boring tool with floating double edged knife
Patent number
4,195,957
Issue date
Apr 1, 1980
Wilhelm Hegenscheidt Gesellschaft mit beschraenkter Haftung
Helmut Wittkopp
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR