BE335771A - - Google Patents
Info
- Publication number
- BE335771A BE335771A BE335771DA BE335771A BE 335771 A BE335771 A BE 335771A BE 335771D A BE335771D A BE 335771DA BE 335771 A BE335771 A BE 335771A
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR613906T | 1925-08-01 | ||
| FR31494T | 1925-09-28 | ||
| FR32677T | 1926-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE335771A true BE335771A (https=) |
Family
ID=27244982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE335771D BE335771A (https=) | 1925-08-01 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE335771A (https=) |
| CH (1) | CH121143A (https=) |
| FR (1) | FR32677E (https=) |
| GB (1) | GB271831A (https=) |
-
0
- BE BE335771D patent/BE335771A/xx unknown
-
1926
- 1926-05-31 FR FR32677D patent/FR32677E/fr not_active Expired
- 1926-07-23 CH CH121143D patent/CH121143A/fr unknown
-
1927
- 1927-04-06 GB GB9532/27A patent/GB271831A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR32677E (fr) | 1928-02-15 |
| CH121143A (fr) | 1927-07-01 |
| GB271831A (en) | 1927-09-29 |