Telephone conferencing systems
US6463038B1 · kind B1 · utility
46Cited by
10References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jan 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2242/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.