Technology:Patent Invented in Germany (18)

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Technology:Patent Invented in Germany (18)

This is the Patent and Invention programme, today we'll go through some new inventions, they are milling machine, electric power string, braille reading machine, hands cleaning glue, etc.

  • Added:2006
  • Country:Germany
  • Duration:30
  • Time of update:2011/3/11 15:03:55

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