Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6577721 | Conference call | Aimo Vainio, Arto Pussinen, Keijo Raiha | 2003-06-10 |
| 6501967 | Defining of a telephone's ringing tone | Jarmo Makela, Heikki Särkkä, Juha Sippola, Jani Leppälammi | 2002-12-31 |
| 5349697 | Radiotelephone including battery-backup random access memory for storing operating code | — | 1994-09-20 |