Mobile microphone-transmitter assembly
US4224482A · kind A · utility
10Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/05
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile microphone-transmitter assembly is disclosed which comprises a microphone, a plurality of infrared light emitting devices, electrical apparatus connected between the microphone and the devices to energize the devices in response to inputs to the microphone and a mechanical structure for supporting the devices to produce a substantially omnidirectional, horizontal radiation pattern when the structure is worn by a user and the devices are energized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.