Inventor · disambiguated record

Trygve Berthelsen

Also filed as: BERTHELSEN TRYGVE

1 granted patent·37 citations·filing 2008–2008

46Inventor score

Technology areasE21B

Files withSMITH INTERNATIONAL1

Top patents by PatentIndex Score

1 record

0183US7762330B2Methods of making multiple casing cutsSMITH INTERNATIONAL·Filed 2008·Granted Jul 27, 2010·37 cites·20 claims

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