Headphone
US5497427A · kind A · utility
24Cited by
10References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Dec 8, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2834
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A headphone in which a housing containing a drive unit is provided with a window hole formed therein and the window hole is covered with a diaphragm providing acoustic transmissibility therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.