BE348253A - - Google Patents
Info
- Publication number
- BE348253A BE348253A BE348253DA BE348253A BE 348253 A BE348253 A BE 348253A BE 348253D A BE348253D A BE 348253DA BE 348253 A BE348253 A BE 348253A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
-
- 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
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR629363T | 1927-02-17 | ||
| FR34325T | 1927-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE348253A true BE348253A (he) |
Family
ID=26182652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE348253D BE348253A (he) | 1927-02-17 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE348253A (he) |
| FR (1) | FR34325E (he) |
| GB (1) | GB298643A (he) |
-
0
- BE BE348253D patent/BE348253A/xx unknown
-
1927
- 1927-10-14 FR FR34325D patent/FR34325E/fr not_active Expired
-
1928
- 1928-10-12 GB GB29442/28A patent/GB298643A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB298643A (en) | 1929-10-03 |
| FR34325E (fr) | 1929-05-04 |