Meaning of use of invention for purposes of Government.

    (1)For the purposes of this Chapter, an invention is said to be used for the purposes of Government if it is made, used, exercised or vended for the purposes of the Central Government, a State Government or a Government undertaking.
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     (3) Nothing contained in this Chapter shall apply in respect of any such importation making or using of any machine, apparatus or other article or of any such using of any process or of any such importation, using or distribution of any medicine or drug, as may be made by virtue of one or more of the conditions specified in section 47.