Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7948395 | Downhole transmission system comprising a coaxial capacitor | David R. Hall, David Pixton, Monte Johnson, David Bartholomew, H. Tracy Hall, Jr. | 2011-05-24 |
| 7548068 | System for testing properties of a network | David Bartholomew, Marshall Soares | 2009-06-16 |
| 7198118 | Communication adapter for use with a drilling component | David R. Hall, David Pixton, H. Tracy Hall, Jr., Kline Bradford | 2007-04-03 |
| 7193527 | Swivel assembly | David R. Hall, David Pixton, Michael Briscoe, Kline Bradford, David Bartholomew +1 more | 2007-03-20 |
| 7132904 | Apparatus for reducing noise | David R. Hall, David Bartholomew | 2006-11-07 |
| 4278350 | Hub alignment | Peter E. G. Marshall | 1981-07-14 |