Wireless microphone
US6678536B2 · kind B2 · utility
4Cited by
10References
5Claims
0Family size
Inventors
Key dates
| Filing date | Dec 7, 2000 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jul 22, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/6091
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless microphone has a base unit connectable to a transmitting/receiving unit adapted to at least transmit signals to another party, a head unit spaced from the base unit and receiving signals from a user, a unit for transmitting signals between the head unit and the base unit with infrared radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.