Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867015 | Rock drilling bit and a method of producing the same | Robert F. Kane, Pual S. Kuzniar | 1989-09-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867015 | Rock drilling bit and a method of producing the same | Robert F. Kane, Pual S. Kuzniar | 1989-09-19 |