Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811359 | Protection channel monitoring system using a check signal comprising two different N-bit code patterns sequentially arranged at random | Masahiro Nakajima | 1989-03-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811359 | Protection channel monitoring system using a check signal comprising two different N-bit code patterns sequentially arranged at random | Masahiro Nakajima | 1989-03-07 |