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Evgeny Illarinovich Ivanov
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Moscow, SU
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last 30 patents
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Patent Grant
Reduction unit of drilling motor
Patent number
4,222,445
Issue date
Sep 16, 1980
Jury V. Vadetsky
E21 - EARTH DRILLING MINING
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Patent Grant
Turbo-drill
Patent number
3,938,596
Issue date
Feb 17, 1976
Evgeny Illarinovich Ivanov
E21 - EARTH DRILLING MINING