| 9519074 |
Flux plane locating in an underground drilling system |
Guenter W. Brune, Albert W. Chau |
2016-12-13 |
| 9513397 |
Tone detection apparatus and method |
Guenter W. Brune |
2016-12-06 |
| 9511856 |
Emergency collective actuator and method for a helicopter |
Mark Marvin |
2016-12-06 |
| 9507046 |
Locating arrangement and method using boring tool and cable locating signals |
Guenter W. Brune, Albert W. Chau |
2016-11-29 |
| 9422804 |
Advanced underground homing system, apparatus and method |
Guenter W. Brune, Albert W. Chau |
2016-08-23 |
| 9415862 |
Control interface, system and method |
Carlos E. Golborne, Ray E. Debs, Mark Marvin |
2016-08-16 |
| 9388683 |
Boring tool control using remote locator |
— |
2016-07-12 |
| 9371725 |
Boring tool tracking fundamentally based on drill string length, pitch and roll |
James W. Burrows, Guenter W. Brune |
2016-06-21 |
| 9360579 |
Advanced steering tool system, method and apparatus |
Guenter W. Brune, Albert W. Chau, Rudolf Zeller |
2016-06-07 |
| 9335431 |
Distinguishing false signals in cable locating based on a modulated reference signal |
Albert W. Chau |
2016-05-10 |
| 9309004 |
Centripetal acceleration determination, centripetal acceleration based velocity tracking system and methods |
— |
2016-04-12 |
| 9310509 |
Electronic time stamping apparatus as a part of a system for use with an inground transmitter |
— |
2016-04-12 |
| 9310507 |
Tracking positions of personnel, vehicles, and inanimate objects |
Rudolf Zeller, Guenter W. Brune, Albert W. Chau |
2016-04-12 |
| 9291738 |
Flux plane locating in an underground drilling system |
Guenter W. Brune, Albert W. Chau |
2016-03-22 |
| 9274013 |
Tension monitoring arrangement and method |
Albert W. Chau, Rudolf Zeller, Charles Yu Yat Tsang |
2016-03-01 |
| 9272780 |
Rotorcraft autopilot and methods |
Nicolas Albion, Mark Bartel, Marc Feifel, Mark Marvin |
2016-03-01 |
| 9267575 |
Drive mechanism and method |
— |
2016-02-23 |
| 9261621 |
Locating arrangement and method using boring tool and cable locating signals |
Guenter W. Brune, Albert W. Chau |
2016-02-16 |
| 9244189 |
Advanced steering tool system, method and apparatus |
Guenter W. Brune, Albert W. Chau, Rudolf Zeller |
2016-01-26 |