BE391227A - - Google Patents
Info
- Publication number
- BE391227A BE391227A BE391227DA BE391227A BE 391227 A BE391227 A BE 391227A BE 391227D A BE391227D A BE 391227DA BE 391227 A BE391227 A BE 391227A
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL394533X | 1932-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE391227A true BE391227A (forum.php) |
Family
ID=19785836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE391227D BE391227A (forum.php) | 1932-01-23 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE391227A (forum.php) |
| FR (1) | FR743749A (forum.php) |
| GB (1) | GB394533A (forum.php) |
-
0
- BE BE391227D patent/BE391227A/xx unknown
- FR FR743749D patent/FR743749A/fr not_active Expired
-
1932
- 1932-10-07 GB GB27972/32A patent/GB394533A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR743749A (forum.php) | 1933-04-05 |
| GB394533A (en) | 1933-06-29 |