Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889403 | Distribution optical fiber tap | Nelson Shen, Bruce D. Campbell, Peder Rodhe, Tom Call | 1989-12-26 |
| 4815805 | Dynamic range reduction using mode filter | Frank H. Levinson, Steve LaVelle, Thomas E. Giles, Bruce D. Campbell | 1989-03-28 |