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Rolling annular workpieces
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Patent number 5,829,292
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Issue date Nov 3, 1998
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Formflo Limited
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Ronald Carl Andriessen
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Making rings from tube or bar stock
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Patent number 4,612,789
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Issue date Sep 23, 1986
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Formflo Limited
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Ronald C. Andriessen
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Ring rolling
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Patent number 4,510,781
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Issue date Apr 16, 1985
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Formflo Limited
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Peter J. Holt
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Making rings from tube stock
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Patent number 4,302,958
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Issue date Dec 1, 1981
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Formflo Limited
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Ronald C. Andriessen
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Rolling operations
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Patent number 3,992,910
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Issue date Nov 23, 1976
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Formflo Limited
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Gordon Sidney Connell
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Rolling operations
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Patent number 3,992,914
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Issue date Nov 23, 1976
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Formflo Limited
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Gordon Sidney Connell
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Split mandrel
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Patent number 3,992,929
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Issue date Nov 23, 1976
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Formflo Limited
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Gordon Sidney Connell
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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