Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5631947 | Mobile telephone device for storing a plurality of changable charge rates and time limit data | Alan D. Wittstein | 1997-05-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5631947 | Mobile telephone device for storing a plurality of changable charge rates and time limit data | Alan D. Wittstein | 1997-05-20 |