BE447676A - - Google Patents
Info
- Publication number
- BE447676A BE447676A BE447676DA BE447676A BE 447676 A BE447676 A BE 447676A BE 447676D A BE447676D A BE 447676DA BE 447676 A BE447676 A BE 447676A
- 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
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR879596T | 1941-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE447676A true BE447676A (https=) |
Family
ID=9361882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE447676D BE447676A (https=) | 1941-10-24 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE447676A (https=) |
| FR (1) | FR879596A (https=) |
-
0
- BE BE447676D patent/BE447676A/xx unknown
-
1941
- 1941-10-24 FR FR879596D patent/FR879596A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR879596A (fr) | 1943-02-26 |