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    For how long does a patent usually last?

    Question #81405. Asked by stupid5584. (Jun 03 07 2:43 PM)


    stupid5584

    		20 years.

    Jun 03 07, 2:50 PM
    mutchisman

    		It can vary from country to country; in the US apatent normally lasts for 20 years

    http://www.iusmentis.com/patents/faq/general/

    Jun 03 07, 2:50 PM

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