Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9571326 | Method and apparatus for high-speed data transfer employing self-synchronizing quadrature amplitude modulation | Roger B. Shaffer | 2017-02-14 |
| 8841912 | Pre-amplifier and mixer circuitry for a locator antenna | — | 2014-09-23 |
| 8717028 | Spring clips for use with locating transmitters | Ray Merewether, Mark S. Olsson, Jeffrey A. Prsha, Jan Soukup, David A. Cox +5 more | 2014-05-06 |
| 8400154 | Locator antenna with conductive bobbin | Mark S. Olsson, Ryan B. Levin, Ray Merewether | 2013-03-19 |
| 8395661 | Pipe inspection system with selective image capture | Mark S. Olsson, Michael J. Martin, Ray Merewether, Tran M. Nguyen | 2013-03-12 |
| 8013610 | High-Q self tuning locating transmitter | Ray Merewether, Mark S. Olsson, Jeffrey A. Praha, Jan Soukup, David A. Cox +5 more | 2011-09-06 |
| 7969151 | Pre-amplifier and mixer circuitry for a locator antenna | — | 2011-06-28 |
| 4312064 | Modified vestigial side band transmission system | Paul H. Thibodeau, Guy M. Campbell, Theodore M. Stump | 1982-01-19 |
| 4292599 | Low pass active filter | — | 1981-09-29 |
| 4276651 | Clock circuitry for a data communication system | William R. Dirkes, Manohar A. Juglekar, James C. Secora, Michael A. Stephen | 1981-06-30 |
| 4229822 | Data detector for a data communication system | — | 1980-10-21 |