Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5812548 | Communication system, a private automatic branch exchange, and a line card | Gerardus M. J. Havermans | 1998-09-22 |
HK
Heert R. Kamstra
Overall (All Time): #3,697,499 of 4,157,543Top 90%
1
Patents All Time