BE497652A - - Google Patents
Info
- Publication number
- BE497652A BE497652A BE497652DA BE497652A BE 497652 A BE497652 A BE 497652A BE 497652D A BE497652D A BE 497652DA BE 497652 A BE497652 A BE 497652A
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE283112X | 1949-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE497652A true BE497652A (https=) |
Family
ID=6044440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE497652D BE497652A (https=) | 1949-08-18 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE497652A (https=) |
| CH (1) | CH283112A (https=) |
| FR (1) | FR1023529A (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3222753A (en) * | 1959-05-18 | 1965-12-14 | Heppner Mfg Co | Speaker magnet structure and method of forming the same |
-
0
- BE BE497652D patent/BE497652A/xx unknown
-
1950
- 1950-08-07 CH CH283112D patent/CH283112A/de unknown
- 1950-08-17 FR FR1023529D patent/FR1023529A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3222753A (en) * | 1959-05-18 | 1965-12-14 | Heppner Mfg Co | Speaker magnet structure and method of forming the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CH283112A (de) | 1952-05-31 |
| FR1023529A (fr) | 1953-03-19 |