Inventor · disambiguated record

Valery Y. Frenkel

Also filed as: FRENKEL VALERY Y

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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