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11/05/2008

Barney Harwood explores the world of inventions, finding out how to become an inventor, what a patent is and how to obtain one, and trying to determine the world's worst invention.

30 minutes

Last on

Sun 11 May 2008 19:15
蜜芽传媒 Radio 4

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04/05/2008

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18/05/2008

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  • Sun 11 May 2008 19:15
    蜜芽传媒 Radio 4