BE451257A - - Google Patents
Info
- Publication number
- BE451257A BE451257A BE451257DA BE451257A BE 451257 A BE451257 A BE 451257A BE 451257D A BE451257D A BE 451257DA BE 451257 A BE451257 A BE 451257A
- 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
- H04R13/02—Telephone receivers
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 |
|---|---|---|---|
| CH235395T | 1943-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE451257A true BE451257A (en:Method) |
Family
ID=4458960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE451257D BE451257A (en:Method) | 1943-06-07 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE451257A (en:Method) |
| CH (1) | CH235395A (en:Method) |
-
0
- BE BE451257D patent/BE451257A/xx unknown
-
1943
- 1943-06-07 CH CH235395D patent/CH235395A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH235395A (de) | 1944-11-30 |