Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5337631 | Method of producing tools and dies | Alfred R. E. Singer, Allen Dennis Roche | 1994-08-16 |
| 4487671 | Methods and apparatus for the electrical machining of a workpiece | — | 1984-12-11 |