Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6466665 | Method for concentrating subscribers in a local exchange | Seppo Kuorelahti, Martti Yrjana, Pekka Korhonen, Toivo Lallukka | 2002-10-15 |
| 6424708 | Method for concentrating subscribers in a telephone network | Seppo Kuorelahti, Martti Yrjana, Pekka Korhonen, Toivo Lallukka | 2002-07-23 |