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Process for producing bar flats
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Patent number 5,592,845
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Issue date Jan 14, 1997
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Pennington Metals, Inc.
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Duane Gerenser
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Method for producing clean cold strip
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Patent number 4,475,369
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Issue date Oct 9, 1984
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Sumitomo Metal Industries, Ltd.
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Yukio Matsuda
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3601837
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Patent number 3,601,837
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Issue date Aug 31, 1971
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B08 - CLEANING
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3479852
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Patent number 3,479,852
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Issue date Nov 25, 1969
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3270364
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Patent number 3,270,364
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3044098
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Patent number 3,044,098
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Issue date Jul 17, 1962
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2900991
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Patent number 2,900,991
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Issue date Aug 25, 1959
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2879779
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Patent number 2,879,779
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Issue date Mar 31, 1959
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent number 2,713,011
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent number 2,234,153
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Issue date Mar 4, 1941
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...