Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6456702 | Clock adjustment method and apparatus | — | 2002-09-24 |
| 4897862 | Acoustic alarm detection system for telephone activation | Akinobu Tomimori, Philip H. Rittmueller | 1990-01-30 |