BE423343A - - Google Patents
Info
- Publication number
- BE423343A BE423343A BE423343DA BE423343A BE 423343 A BE423343 A BE 423343A BE 423343D A BE423343D A BE 423343DA BE 423343 A BE423343 A BE 423343A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Landscapes
- Physics & Mathematics (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 |
|---|---|---|---|
| FR48418T | 1937-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE423343A true BE423343A (https=) |
Family
ID=8683761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE423343D BE423343A (https=) | 1937-04-28 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE423343A (https=) |
| FR (2) | FR822569A (https=) |
| GB (1) | GB506421A (https=) |
-
0
- BE BE423343D patent/BE423343A/xx unknown
-
1936
- 1936-09-10 FR FR822569D patent/FR822569A/fr not_active Expired
-
1937
- 1937-04-28 FR FR48418D patent/FR48418E/fr not_active Expired
- 1937-08-26 GB GB23416/37A patent/GB506421A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR822569A (fr) | 1938-01-04 |
| FR48418E (fr) | 1938-02-03 |
| GB506421A (en) | 1939-05-26 |