Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853680 | Groove cutting tool break event detecting method and system | — | 1989-08-01 |
| 4849741 | Tool break detecting method and system preventing false alarms due to rough surfaces | — | 1989-07-18 |
| 4838308 | Multipurpose control valve | by Vivian Thomas, executrix | 1989-06-13 |
| 4831365 | Cutting tool wear detection apparatus and method | Minyoung Lee, Douglas Glenn Wildes | 1989-05-16 |
| 4806914 | Detection by automatic gain control features of gradual cutting tool breakage | James F. Bedard, Lawson P. Harris, Douglas Glenn Wildes, Steven Robert Hayashi | 1989-02-21 |