Horn speaker
US3972385A · kind A · utility
13Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1974 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Jan 14, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/345
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A horn speaker comprising a diaphragm positioned close to a throat and side walls forming sound passages for radiating the vibrations of the diaphragm effectively as sound waves from the mouth of the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.