BE437610A - - Google Patents
Info
- Publication number
- BE437610A BE437610A BE437610DA BE437610A BE 437610 A BE437610 A BE 437610A BE 437610D A BE437610D A BE 437610DA BE 437610 A BE437610 A BE 437610A
- 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
- H04R7/12—Non-planar diaphragms or cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2233244X | 1939-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE437610A true BE437610A (forum.php) | 1940-07-09 |
Family
ID=28052833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE437610D BE437610A (forum.php) | 1939-01-13 | 1940-01-09 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2233244A (forum.php) |
| BE (1) | BE437610A (forum.php) |
| FR (1) | FR862867A (forum.php) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3101022A (en) * | 1963-08-20 | baschet | ||
| US3004620A (en) * | 1955-07-28 | 1961-10-17 | Baschet Francois Pierr Maurice | Acoustic amplifier and musical instrument incorporating same |
| DE2709374C3 (de) * | 1977-03-01 | 1979-11-08 | Bm-Elektronik Meldtky Kg, 1000 Berlin | Elektroakustischer Wandler |
| DE2946981C2 (de) * | 1979-11-21 | 1981-05-14 | Bm-Elektronik Meletzky Kg, 1000 Berlin | Elektroakustischer Wandler |
| DE3138566A1 (de) * | 1981-09-28 | 1983-04-07 | Siegfried Dr. 75009 Paris Klein | Lautsprecher, insbesondere hochtonlautsprecher |
| FR2619481B1 (fr) * | 1987-08-14 | 1989-11-17 | Commissariat Energie Atomique | Transducteur omnidirectionnel d'ondes elastiques a large bande passante |
| US5014321A (en) * | 1988-10-11 | 1991-05-07 | Commissariat A L'energie Atomique | Wide passband omnidirectional loudspeaker |
| FR2637760B1 (fr) * | 1988-10-11 | 1991-04-05 | Commissariat Energie Atomique | Haut-parleur omnidirectionnel a large bande passante |
| US20060196723A1 (en) * | 2005-03-03 | 2006-09-07 | White Fred I | Balloon speaker asembly |
-
1940
- 1940-01-09 BE BE437610D patent/BE437610A/xx unknown
- 1940-01-12 FR FR862867D patent/FR862867A/fr not_active Expired
- 1940-01-18 US US314540A patent/US2233244A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2233244A (en) | 1941-02-25 |
| FR862867A (fr) | 1941-03-18 |