BE441017A - - Google Patents
Info
- Publication number
- BE441017A BE441017A BE441017DA BE441017A BE 441017 A BE441017 A BE 441017A BE 441017D A BE441017D A BE 441017DA BE 441017 A BE441017 A BE 441017A
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB968939A GB527026A (en) | 1939-03-28 | 1939-03-28 | Improvements in or relating to loud-speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441017A true BE441017A (ja) |
Family
ID=9876857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441017D BE441017A (ja) | 1939-03-28 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE441017A (ja) |
| GB (1) | GB527026A (ja) |
-
0
- BE BE441017D patent/BE441017A/xx unknown
-
1939
- 1939-03-28 GB GB968939A patent/GB527026A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB527026A (en) | 1940-10-01 |