Headphone
US5881161A · kind A · utility
25Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1998 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Jun 17, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A headphone is composed of a speaker, a microphone, and a flexible earpiece capable of being secured to the external ears of various sizes. The flexible earpiece is formed of a flexible rod which is provided at one end thereof with a female portion and at another end thereof with a male portion engageable with the female portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.