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2014 tube bending machine invention patent 2

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2014 tube bending machine invention patent 1

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2013 tube bending machine invention patent

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2013 shrinkage machine invention patent

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2015 new patent for pipe bending machine 2

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2015 new patent for pipe bending machine 1

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2015 new patent for pipe cutting machine 12

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2015 new patent for pipe cutting machine 11

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2015 new patent for pipe cutting machine 10

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