BE347742A - - Google Patents
Info
- Publication number
- BE347742A BE347742A BE347742DA BE347742A BE 347742 A BE347742 A BE 347742A BE 347742D A BE347742D A BE 347742DA BE 347742 A BE347742 A BE 347742A
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnets (AREA)
- Magnetic Treatment Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US159552A US1782094A (en) | 1927-01-07 | 1927-01-07 | Electrical movement for loud-speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE347742A true BE347742A (it) |
Family
ID=22573025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE347742D BE347742A (it) | 1927-01-07 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1782094A (it) |
| BE (1) | BE347742A (it) |
| DE (1) | DE500413C (it) |
| FR (1) | FR646686A (it) |
| GB (1) | GB283213A (it) |
-
0
- BE BE347742D patent/BE347742A/xx unknown
-
1927
- 1927-01-07 US US159552A patent/US1782094A/en not_active Expired - Lifetime
-
1928
- 1928-01-02 GB GB35/28A patent/GB283213A/en not_active Expired
- 1928-01-03 FR FR646686D patent/FR646686A/fr not_active Expired
- 1928-01-07 DE DEH114642D patent/DE500413C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE500413C (de) | 1930-06-24 |
| FR646686A (fr) | 1928-11-14 |
| GB283213A (it) | 1928-09-20 |
| US1782094A (en) | 1930-11-18 |