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Method for machining a functional part
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Patent number 9,999,916
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Issue date Jun 19, 2018
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Thyssenkrupp Presta Aktiengesellschaft
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Thomas Keppler-Ott
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Closed forging die and forging method
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Patent number 7,900,493
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Issue date Mar 8, 2011
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NTN Corporation
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Miao Jiahua
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Fully enclosed die forging apparatus
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Patent number 4,918,970
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Issue date Apr 24, 1990
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Aida Engineering, Ltd.
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Nobuyuki Ishinaga
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3110166
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Patent number 3,110,166
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Issue date Nov 12, 1963
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent number 1,845,122
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Issue date Feb 16, 1932
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent number 1,632,090
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Issue date Jun 14, 1927
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent number 1,497,530
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Issue date Jun 10, 1924
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...