Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621785 | Portable telephone set transmitting area identification signal indicative of a radio zone occupied thereby | — | 1997-04-15 |
| 5615248 | Telephone apparatus having automatic display function | — | 1997-03-25 |
| 5613202 | Mobile station with function which enables a user to easily recognize a current position | Takeshi Ishida | 1997-03-18 |