Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4523308 | Telephone concentrator switch arrangement | John W. Bull, Leon Croft, David B. DeVaney, Russell R. Davis, David L. Hinshaw +6 more | 1985-06-11 |
| 4430530 | Telephony system with automatic test call generator for remote port groups | Donald R. Merriam, Bernard H. Root, William W. Woodruff | 1984-02-07 |