Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734928 | Cellular mobile phone with a plurality of accessing telephone numbers for allowing access to the mobile phones by any one of the telephones numbers | Sherwin A. Brook, Michael Freitag | 1988-03-29 |
| 4677653 | Cellular mobile phone with a plurality of accessing telephone numbers for allowing access to the mobile phone by any one of the telephone numbers | Sherwin A. Brook, Michael Freitag | 1987-06-30 |