BE353324A - - Google Patents
Info
- Publication number
- BE353324A BE353324A BE353324DA BE353324A BE 353324 A BE353324 A BE 353324A BE 353324D A BE353324D A BE 353324DA BE 353324 A BE353324 A BE 353324A
- 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)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20732/27A GB299537A (en) | 1927-08-05 | 1927-08-05 | Improvements in or relating to electro-mechanical translating devices, such for example as loud speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE353324A true BE353324A (zh) |
Family
ID=10150715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE353324D BE353324A (zh) | 1927-08-05 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1786584A (zh) |
| BE (1) | BE353324A (zh) |
| FR (1) | FR658378A (zh) |
| GB (1) | GB299537A (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114666704A (zh) * | 2022-03-17 | 2022-06-24 | 维沃移动通信有限公司 | 发声装置以及电子设备 |
-
0
- BE BE353324D patent/BE353324A/xx unknown
-
1927
- 1927-08-05 GB GB20732/27A patent/GB299537A/en not_active Expired
-
1928
- 1928-07-19 US US293961A patent/US1786584A/en not_active Expired - Lifetime
- 1928-07-26 FR FR658378D patent/FR658378A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1786584A (en) | 1930-12-30 |
| FR658378A (fr) | 1929-06-04 |
| GB299537A (en) | 1928-11-01 |