Paso Robles, California
United States
3
2015-04-16
The entities that hold a legal rights for patent applications filed by inventor Graf Stephan:
Stephan Graf from Paso Robles, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Sub-surface formation boundary detection using an electric-field borehole telemetry apparatus
#2 | 2015-01-01Telemetry antenna arrangement
#3 | 2013-02-14Short range data transmission in a borehole
86055 ⎘