Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821259 | Control information communication arrangement for a distributed control switching system | Dennis L. DeBruler, Edward H. Hafer, Thomas L. Hiller, James M. Johnson, Jr., Douglas A. Kimber +2 more | 1989-04-11 |