Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4782523 | Tone detection process and device for implementing said process | Claude Galand, Robert Vermot-Gauchy, Helene Cerf-Danon | 1988-11-01 |
GR
Guy Roulier
Overall (All Time): #3,962,247 of 4,157,543Top 100%
1
Patents All Time