Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831365 | Cutting tool wear detection apparatus and method | Charles E. Thomas, Minyoung Lee | 1989-05-16 |
| 4806914 | Detection by automatic gain control features of gradual cutting tool breakage | Charles E. Thomas, James F. Bedard, Lawson P. Harris, Steven Robert Hayashi | 1989-02-21 |