Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5150636 | Rock drill bit and method of making same | — | 1992-09-29 |
| 5138926 | Level control system for automatic accompaniment playback | Glenn R. Stier, B. Loch Miwa, Alberto Kniepkamp | 1992-08-18 |