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Manufacture of metal extrusions
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Patent number 4,817,411
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Issue date Apr 4, 1989
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Alcan International Limited
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Walter Bennett
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Extrusion forging method therefor
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Patent number 4,425,774
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Issue date Jan 17, 1984
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Agency of Industrial Science and Technology
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Kichitaro Shinozaki
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Stretching machine
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Patent number 4,141,679
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Issue date Feb 27, 1979
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UBE Industries, Ltd.
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Toyohide Asano
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3668910
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Patent number 3,668,910
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Issue date Jun 13, 1972
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3587280
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Patent number 3,587,280
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Issue date Jun 28, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3293899
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Patent number 3,293,899
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Issue date Dec 27, 1966
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3271985
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Patent number 3,271,985
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Issue date Sep 13, 1966
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3257832
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Patent number 3,257,832
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Issue date Jun 28, 1966
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3254400
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Patent number 3,254,400
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Issue date Jun 7, 1966
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3073442
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Patent number 3,073,442
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Issue date Jan 15, 1963
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3018885
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Patent number 3,018,885
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Issue date Jan 30, 1962
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2936018
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Patent number 2,936,018
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Issue date May 10, 1960
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2830643
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Patent number 2,830,643
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Issue date Apr 15, 1958
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2708511
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Patent number 2,708,511
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Issue date May 17, 1955
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2692421
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Patent number 2,692,421
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Issue date Oct 26, 1954
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...