BE385205A - - Google Patents
Info
- Publication number
- BE385205A BE385205A BE385205DA BE385205A BE 385205 A BE385205 A BE 385205A BE 385205D A BE385205D A BE 385205DA BE 385205 A BE385205 A BE 385205A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE385205X | 1931-01-24 | ||
| GB440/32A GB399779A (en) | 1931-01-24 | 1932-01-06 | Improvements in or relating to magnets, particularly for electrodynamic loudspeakers, microphones, electric pick-ups or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE385205A true BE385205A (https=) | 1932-01-30 |
Family
ID=9704368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE385205D BE385205A (https=) | 1931-01-24 | 1931-12-24 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE385205A (https=) |
| FR (1) | FR728897A (https=) |
| GB (1) | GB399779A (https=) |
-
1931
- 1931-12-24 BE BE385205D patent/BE385205A/xx unknown
- 1931-12-28 FR FR728897D patent/FR728897A/fr not_active Expired
-
1932
- 1932-01-06 GB GB440/32A patent/GB399779A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB399779A (en) | 1933-10-12 |
| FR728897A (fr) | 1932-07-12 |