Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8567836 | Gripping assembly and gripping members for a grapple attachment | Roger LaValley, Marvin N. Larson, Lawrence D. Kilpo, Michael Burgess | 2013-10-29 |
| 8490519 | Attachment for making up or breaking out pipe | Daniel Larson, Roger LaValley, Marvin N. Larson, Rodney Wurgler, Christopher G. Kay +2 more | 2013-07-23 |
| 8348319 | Grapple attachment for use with drill pipes | Roger LaValley | 2013-01-08 |
| 8328071 | Position adjustable grapple attachment | Daniel Larson, Jesse Kilde, Michael Burgess, Lawrence D. Kilpo | 2012-12-11 |
| 8146971 | Grapple attachment for use with drill pipes | Roger LaValley | 2012-04-03 |
| D645062 | Gripping arm | Roger LaValley, Lawrence D. Kilpo, Michael Burgess | 2011-09-13 |