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(11) 81067 (51) (2013.01)
E21B 7/00
(24) 25.06.2013
(21) u201212574 (22) 05.11.2012
(46) 25.06.2013, . 12
(71) "ֲ ò Ͳ" (UA )
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"NATIONAL MINING UNIVERSITY" STATE HIGHER EDUCATIONAL INSTITUTION (UA )
(72) (UA )
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Ihnatov Andrii Oleksandrovych (UA )
(73) "ֲ ò Ͳ", . . , 19, . , 49000 (UA )
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"NATIONAL MINING UNIVERSITY" STATE HIGHER EDUCATIONAL INSTITUTION (UA )
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DRILLING APPARATUS
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(57)
   
 
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