Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5604479 | Voice recording and playback apparatus, and alarm system with voice recording and playback apparatus | — | 1997-02-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5604479 | Voice recording and playback apparatus, and alarm system with voice recording and playback apparatus | — | 1997-02-18 |