Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6501967 | Defining of a telephone's ringing tone | Jarmo Makela, Heikki Särkkä, Sakari Pelkonen, Juha Sippola | 2002-12-31 |
| 6094587 | Programming of a telephone's ringing tone | Taneli Armanto, Vesa Ylitolva | 2000-07-25 |