Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680102 | RF data communication link for wireless audible indication system | — | 1997-10-21 |
| 5680112 | Wireless audible indication system with battery status indicator | — | 1997-10-21 |
| 5663731 | Method and apparatus for time invariant pulse detection | James T. Theodoras, II | 1997-09-02 |
| 5612666 | Wireless audible indications system | — | 1997-03-18 |