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patent and trademark office database

n.
1.the government bureau in the Department of Commerce that keeps a record of patents and trademarks and grants new ones

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Word of the Day

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    Idiom of the Day

    rail at (someone) about (something)
    to complain loudly to someone about something
    The customer was railing at the clerk about the bad service.



    1.
    He got so angry that he ________ his top.

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    Invention
    Invention : fresnel lens
    Year : 1820
    Inventor : augustin-jean fresnel
    Country : france.      .. More >>
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