Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890316 | Modem for communicating at high speed over voice-grade telephone circuits | Clifford H. Wallach | 1989-12-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890316 | Modem for communicating at high speed over voice-grade telephone circuits | Clifford H. Wallach | 1989-12-26 |