BE349183A - - Google Patents
Info
- Publication number
- BE349183A BE349183A BE349183DA BE349183A BE 349183 A BE349183 A BE 349183A BE 349183D A BE349183D A BE 349183DA BE 349183 A BE349183 A BE 349183A
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR642705T | 1927-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE349183A true BE349183A (en:Method) |
Family
ID=8998975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE349183D BE349183A (en:Method) | 1927-03-24 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE349183A (en:Method) |
| FR (1) | FR642705A (en:Method) |
-
0
- BE BE349183D patent/BE349183A/xx unknown
-
1927
- 1927-03-24 FR FR642705D patent/FR642705A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR642705A (fr) | 1928-09-03 |