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Werner Friedrich Thomas
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Hasselroth, DT
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last 30 patents
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Method and apparatus for the production of solid forging blocks wit...
Patent number
4,049,039
Issue date
Sep 20, 1977
Leybold Heraeus GmbH & Co. KG
Helmut Theodor Grof
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...