Inventor · disambiguated record

F. James Thornton

Also filed as: THORNTON F JAMES

1 granted patent·11 citations·filing 1983–1983

33Inventor score

Technology areasE21B

Files withCHRISTENSEN INC NORTON1

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1 record

0133US4552231ARotating pilot core bit for use in highly fractured formationsCHRISTENSEN INC NORTON·Filed 1983·Granted Nov 12, 1985·11 cites·3 claims

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