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Durable method for producing finned tubing
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Patent number 5,016,460
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Issue date May 21, 1991
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Inco Alloys International, Inc.
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Jimmy C. England
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Method of production of metal wires
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Patent number 4,386,513
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Issue date Jun 7, 1983
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SECIM
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Michel Doudet
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3908420
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Patent number 3,908,420
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Issue date Sep 30, 1975
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3054176
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Patent number 3,054,176
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Issue date Sep 18, 1962
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2023776
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Patent number 2,023,776
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Issue date Dec 10, 1935
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...