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Hollow spring utilizing seamless steel pipe
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Patent number 10,118,208
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Issue date Nov 6, 2018
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SHINKO METAL PRODUCTS CO., LTD.
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Kotaro Toyotake
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Methods for extrusion
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Patent number 4,425,775
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Issue date Jan 17, 1984
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Western Electric Co.
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Francis J. Fuchs
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Extrusion die
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Patent number 4,377,943
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Issue date Mar 29, 1983
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Western Electric Co., Inc.
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Francis J. Fuchs
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Methods and apparatus for extrusion
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Patent number 4,319,476
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Issue date Mar 16, 1982
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Western Electric Company, Incorporated
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Francis J. Fuchs
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Hydrostatic pressing apparatus
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Patent number 4,305,270
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Issue date Dec 15, 1981
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Evgeny A. Kokovikhin
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Hydrostatically extruded thermoelectric legs
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Patent number 4,161,111
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Issue date Jul 17, 1979
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Minnesota Mining and Manufacturing Company
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Edward F. Hampl
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Hydrostatic extrusion apparatus
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Patent number 4,112,723
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Issue date Sep 12, 1978
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Kobe Steel, Ltd.
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Akira Asari
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Process for producing a heat pipe
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Patent number 4,087,893
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Issue date May 9, 1978
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Nippon Gakki Seizo Kabushiki Kaisha
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Takeo Sata
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Hydrostatic extrusion method
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Patent number 4,083,214
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Issue date Apr 11, 1978
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Kobe Steel, Ltd.
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Akira Asari
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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