Inventor · disambiguated record

Robert J. Balkenbush

Also filed as: BALKENBUSH ROBERT J

1 granted patent·53 citations·filing 1983–1983

49Inventor score

Technology areasE21B

Files withCHRISTENSEN INC NORTON1

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1 record

0173US4567954AReplaceable nozzles for insertion into a drilling bit formed by powder metallurgical techniques and a method for manufacturing the sameCHRISTENSEN INC NORTON·Filed 1983·Granted Feb 4, 1986·53 cites·19 claims

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