Headphone
USRE37398E · kind E · reissue
23Cited by
10References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1998 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Mar 3, 2018 |
Classification
- Technology area (CPC —)General
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.