Inventor · disambiguated record

Evgeny N. Tsvetkov

Also filed as: TSVETKOV EVGENY N

1 granted patent·0 citations·filing 1981–1981

11Inventor score

Technology areasE21B

Files withINST GORNOGO DELA SIBIRSKOGO O1

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1 record

0120US4440240AMethod of making holes in the soil and apparatus for performing this methodINST GORNOGO DELA SIBIRSKOGO O·Filed 1981·Granted Apr 3, 1984·0 cites·32 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →