BE360817A - - Google Patents
Info
- Publication number
- BE360817A BE360817A BE360817DA BE360817A BE 360817 A BE360817 A BE 360817A BE 360817D A BE360817D A BE 360817DA BE 360817 A BE360817 A BE 360817A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
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 |
|---|---|---|---|
| NL316203X | 1928-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE360817A true BE360817A (https=) |
Family
ID=19783812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE360817D BE360817A (https=) | 1928-07-25 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE360817A (https=) |
| FR (1) | FR675435A (https=) |
| GB (1) | GB316203A (https=) |
-
0
- BE BE360817D patent/BE360817A/xx unknown
-
1928
- 1928-12-06 GB GB36049/28A patent/GB316203A/en not_active Expired
-
1929
- 1929-05-21 FR FR675435D patent/FR675435A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR675435A (fr) | 1930-02-10 |
| GB316203A (en) | 1929-08-22 |