BE340130A - - Google Patents
Info
- Publication number
- BE340130A BE340130A BE340130DA BE340130A BE 340130 A BE340130 A BE 340130A BE 340130D A BE340130D A BE 340130DA BE 340130 A BE340130 A BE 340130A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86123A US1702926A (en) | 1926-02-05 | 1926-02-05 | Loud-speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE340130A true BE340130A (en:Method) |
Family
ID=22196419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE340130D BE340130A (en:Method) | 1926-02-05 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1702926A (en:Method) |
| BE (1) | BE340130A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5379525A (en) * | 1976-12-23 | 1978-07-14 | Sony Corp | Compound diaphtagm for speakers |
| FR2598843B1 (fr) * | 1986-05-15 | 1989-02-10 | Centre Nat Rech Scient | Structure composite pour table d'harmonie d'instruments a cordes et son procede de fabrication |
-
0
- BE BE340130D patent/BE340130A/xx unknown
-
1926
- 1926-02-05 US US86123A patent/US1702926A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1702926A (en) | 1929-02-19 |