Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359841 | Grinding wheel wear detection and dressing method | Charles F. Barth, Thomas Semon Stelson | 1982-11-23 |
| 4295301 | Dressing apparatus with means for detecting grinding wheel wear | Charles F. Barth, Thomas Semon Stelson | 1981-10-20 |