Inventor · disambiguated record

Evgeny I. Shemyakin

Also filed as: SHEMYAKIN EVGENY I

1 granted patent·18 citations·filing 1984–1984

38Inventor score

Technology areasE21B

Files withINST GORNOGO DELA SIBIRSKOGO O1

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1 record

0148US4708211AReversible air-operated percussive action machine for driving holes in the groundINST GORNOGO DELA SIBIRSKOGO O·Filed 1984·Granted Nov 24, 1987·18 cites·4 claims

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