Calgary
Canada
8
2015-07-09
The entities that hold a legal rights for patent applications filed by inventor Whalen David D.:
David D. Whalen from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Acoustic telemetry stacked-ring wave delay isolator system and method
#2 | 2011-10-20Tapered thread EM gap sub self-aligning means and method
#3 | 2011-02-17Electrical isolation connector for electromagnetic gap sub
#4 | 2010-08-19Acoustic telemetry stacked-ring wave delay isolator system and method
#5 | 2010-08-12System and method for accurate wellbore placement
#6 | 2010-08-05Parallel-path acoustic telemetry isolation system and method
#7 | 2010-02-25Electrical Isolation Connector For Electromagnetic Gap Sub
#8 | 2008-08-14Electrical isolation connector for electromagnetic gap sub
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