Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE40944 | Adjustable shear valve mud pulser and controls therefor | Macmillan M. Wisler | 2009-10-27 |
| 6697298 | High efficiency acoustic transmitting system and method | Vladimir Dubinsky, David M. Schneider | 2004-02-24 |
| 6469637 | Adjustable shear valve mud pulser and controls therefor | Macmillan M. Wisler | 2002-10-22 |