Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5396543 | Signaling arrangements in a cellular mobile telecommunications switching system | Patrick E. Helmers, Michael Stein | 1995-03-07 |
| 5289179 | Maintaining stable virtual circuit data connections with spare protocol handler | Patrick E. Helmers, Michael Stein | 1994-02-22 |
| 5278890 | Paging arrangements in a cellular mobile switching system | Louis L. Kittock, Michael Stein | 1994-01-11 |