Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7950475 | Percussion drilling assembly having a floating feed tube | Shantanu N. Swadi, Lance D. Underwood, Charles H. Dewey, Kevin Edgar Harrington | 2011-05-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7950475 | Percussion drilling assembly having a floating feed tube | Shantanu N. Swadi, Lance D. Underwood, Charles H. Dewey, Kevin Edgar Harrington | 2011-05-31 |