Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853955 | Apparatus and method for providing existing telephone switching equipment with the capability of using the SS7 protocol | David Thorn, Rajendra Patel, Ashok Trivedi, Girish Patel | 1989-08-01 |