Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5501680 | Boundary and proximity sensor apparatus for a laser | Marc D. Liang, Krishna Narayanan | 1996-03-26 |
| 5345538 | Voice activated control apparatus | Krishna Narayannan, Marc D. Liang | 1994-09-06 |
| 4989253 | Voice activated microscope | Marc D. Liang, Krishna Narayanan | 1991-01-29 |
| 4840377 | Electrical tape boundary sensor apparatus | C. Frederick Bowser | 1989-06-20 |
| 4723911 | Intelligent dental drill | — | 1988-02-09 |