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Manufacturing razor blades
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Patent number 8,607,667
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Issue date Dec 17, 2013
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The Gillette Company
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Cheng-Jih Li
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Manufacturing razor blades
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Patent number 8,061,237
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Issue date Nov 22, 2011
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The Gillette Company
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Stephen F. Hobbs
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Manufacturing razor blades
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Patent number 7,578,217
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Issue date Aug 25, 2009
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The Gillette Company
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Stephen F. Hobbs
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Razor blade
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Patent number 6,629,475
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Issue date Oct 7, 2003
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The Gillette Company
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Nicolae Neamtu
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR