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Method of manufacturing a transistor and transistor manufactured by this method
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Improvements in and relating to Electro-plating Apparatus.
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A New or Improved Method of Producing Tubes or Pipes with Longitudinal Partitions.
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Tubes, single or compound, with longitudinal ribs.
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An Improved Method of Producing Longitudinally Ribbed Metal Pipes.
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Manufacture of welded tubes and pipes
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Manufacture of compound tubes.
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A New or Improved Process for Manufacturing Metal Pipes.
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New or Improved Process for Manufacturing Pipes.
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