H04Q 2213/194
Four-wire connection or transmission
H04Q2213/194 (Four-wire connection or transmission) appears on 3 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 3
- Published applications
- 0
- Assignees
- 3
- Inventors
- 11
- Latest grant
- 23 Aug 1994
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- ISDN terminal adapter for access from analog signal equipment of four-wire full duplex type to ISDN23 Aug 1994US 5,341,418 ANEC Corporation
- Terminal adapter pooling system for ISDN7 Jun 1994US 5,319,700 AKabushiki Kaisha Toshiba
- ISDN user-network interface system3 May 1994US 5,309,440 AKokusai Denshin Denwa Kabushiki Kaisha
No published applications in this class yet.
Most cited
By later US patents
- ISDN user-network interface system24US 5,309,440 AKokusai Denshin Denwa Kabushiki Kaisha · 1994
- Terminal adapter pooling system for ISDN15US 5,319,700 AKabushiki Kaisha Toshiba · 1994
- ISDN terminal adapter for access from analog signal equipment of four-wire full duplex type to ISDN12US 5,341,418 ANEC Corporation · 1994