BE452930A - - Google Patents
Info
- Publication number
- BE452930A BE452930A BE452930DA BE452930A BE 452930 A BE452930 A BE 452930A BE 452930D A BE452930D A BE 452930DA BE 452930 A BE452930 A BE 452930A
- 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
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR252030X | 1942-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE452930A true BE452930A (fi) |
Family
ID=8884181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE452930D BE452930A (fi) | 1942-10-30 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE452930A (fi) |
| CH (1) | CH252030A (fi) |
| FR (1) | FR960711A (fi) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1115766B (de) * | 1956-06-09 | 1961-10-26 | Schoeps Dr Ing Karl | Schallempfaenger |
-
0
- FR FR960711D patent/FR960711A/fr not_active Expired
- BE BE452930D patent/BE452930A/xx unknown
-
1943
- 1943-10-30 CH CH252030D patent/CH252030A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR960711A (fi) | 1950-04-22 |
| CH252030A (fr) | 1947-11-30 |