Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4723271 | Apparatus for selectively alerting party line subscribers | — | 1988-02-02 |
| 4611101 | Method and apparatus for testing communication systems | Michael Walter | 1986-09-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4723271 | Apparatus for selectively alerting party line subscribers | — | 1988-02-02 |
| 4611101 | Method and apparatus for testing communication systems | Michael Walter | 1986-09-09 |