Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7411490 | Security monitoring methodology using digital audio | Charles Perkinson | 2008-08-12 |
| 5817993 | Monitoring of elevator door reversal data | Sanjay Kamani, Ronald R. Pepin | 1998-10-06 |
| 5760350 | Monitoring of elevator door performance | Ronald R. Pepin, Robert H. Mashiak, Sanjay Kamani, Jean-Marie Rennetaud | 1998-06-02 |