Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671818 | Rotary drill bits | Alex Newton, Andrew Murdock, John Martin Clegg | 1997-09-30 |
| 5651421 | Rotary drill bits | Alex Newton, John M. Fuller, Andrew Murdock | 1997-07-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671818 | Rotary drill bits | Alex Newton, Andrew Murdock, John Martin Clegg | 1997-09-30 |
| 5651421 | Rotary drill bits | Alex Newton, John M. Fuller, Andrew Murdock | 1997-07-29 |