Inventor · disambiguated record

Boris J. Pyakkonen

Also filed as: PYAKKONEN BORIS J

1 granted patent·8 citations·filing 1981–1981

30Inventor score

Technology areasE21B

Files withPROIZV GEOL OB TSENTR RAIONOV1

Top patents by PatentIndex Score

1 record

0127US4470457ADevice for the transfer of plugging and grouting materials to, and their processing at, a pre-set level in a wellPROIZV GEOL OB TSENTR RAIONOV·Filed 1981·Granted Sep 11, 1984·8 cites·2 claims

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