Headrest speaker device
US4490842A · kind A · utility
65Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 1982 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | May 18, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S5/904
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Headrest speaker device, in which the upper ends of pipes supporting a headrest on the upper part of a seat are in communication with speaker cabinets disposed at each side of the headrest and the lower ends of the pipes open toward the outside at the sides of the seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.