DE3278664D1
Fsk voiceband modem using digital filters.
Abstract
This record has no abstract on file.
Term
Term ended
Expired 23 July 2002, 24.2 years ago.
- Priority
- Filed
- Granted
- Expired
- Today
10 members in 6 offices
Priority claims7
| Document | Office | Kind | Date |
|---|---|---|---|
| 30501481 | United States of America | A | |
| 30501481 | United States of America | A | |
| 8201008 | United States of America | W | |
| 8201008 | United States of America | W | |
| 82US8201008 | – | – | – |
| US19810305014 | – | – | – |
| WO1982US01008 | – | – | – |
Members10
| Document | Office | Kind | |
|---|---|---|---|
| WO8301166A1 | World Intellectual Property Organization (WIPO) | A1 | |
| EP0089343A1 | European Patent Office (EPO) | A1 | |
| US4425665A | United States of America | A | |
| IT8223422A1 | Italy | A1 | |
| JPS59501142A | Japan | A | |
| EP0089343A4 | European Patent Office (EPO) | A4 | |
| EP0089343B1 | European Patent Office (EPO) | B1 | |
| DE3278664D1This record | Germany | D1 | |
| IT1198405B | Italy | B | |
| JPH0552100B2 | Japan | B2 |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| No opposition during term of oppositionOpposition8364 | 8364 |
Numbers
- Publication, DOCDB
- 3278664
- Publication, EPODOC
- DE3278664D
- Application
- 8282902614
- Application, DOCDB
- 3278664
- Application, EPODOC
- DE19823278664T
Titles2
- English
- FSK VOICEBAND MODEM USING DIGITAL FILTERS
- German
- FSK VOICEBAND MODEM USING DIGITAL FILTERS
Classification
- CPC, 1
- H04L27/10
- IPC, 1
- H04L27 10