Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4727495 | Data communication system | Martin Roberts | 1988-02-23 |
| 4587381 | Line identification apparatus for a telecommunications exchange | — | 1986-05-06 |
| 4340832 | Dynamoelectric machine brush holder | Ralph E. Sears | 1982-07-20 |