Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8065935 | Method of manufacturing a rotary drill bit | William H. Sherwood, Jr., Robert J. Costo, Jr., James L. Duggan | 2011-11-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8065935 | Method of manufacturing a rotary drill bit | William H. Sherwood, Jr., Robert J. Costo, Jr., James L. Duggan | 2011-11-29 |