Calgary
Canada
6
2019-01-03
The entities that hold a legal rights for patent applications filed by inventor Logan Derek:
Derek Logan from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Method and system for non-intrusive pipeline testing
#2 | 2018-07-26Clamp and a method of clamping
#3 | 2013-02-07Drill bit assembly having aligned features
#4 | 2012-04-12Drill bit assembly having electrically isolated gap joint for electromagnetic telemetry
#5 | 2009-09-10Fluid erosion protection washer for rotating shaft in MWD tool
#6 | 2007-03-01Fluid erosion protection washer for rotating shaft in MWD tool
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