BE383116A - - Google Patents
Info
- Publication number
- BE383116A BE383116A BE383116DA BE383116A BE 383116 A BE383116 A BE 383116A BE 383116D A BE383116D A BE 383116DA BE 383116 A BE383116 A BE 383116A
- 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
- H04R21/00—Variable-resistance transducers
- H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3648030A GB368751A (en) | 1930-12-03 | 1930-12-03 | Improvements in or relating to devices for use in the reproduction of sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE383116A true BE383116A (forum.php) | 1931-11-30 |
Family
ID=10388539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE383116D BE383116A (forum.php) | 1930-12-03 | 1931-10-03 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE383116A (forum.php) |
| FR (1) | FR719856A (forum.php) |
| GB (1) | GB368751A (forum.php) |
-
1930
- 1930-12-03 GB GB3648030A patent/GB368751A/en not_active Expired
-
1931
- 1931-06-26 FR FR719856D patent/FR719856A/fr not_active Expired
- 1931-10-03 BE BE383116D patent/BE383116A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB368751A (en) | 1932-03-03 |
| FR719856A (fr) | 1932-02-18 |