BE426663A - - Google Patents
Info
- Publication number
- BE426663A BE426663A BE426663DA BE426663A BE 426663 A BE426663 A BE 426663A BE 426663D A BE426663D A BE 426663DA BE 426663 A BE426663 A BE 426663A
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE426663X | 1937-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE426663A true BE426663A (xx) | 1938-03-31 |
Family
ID=5782987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE426663D BE426663A (xx) | 1937-03-10 | 1938-02-28 |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT157075B (xx) |
| BE (1) | BE426663A (xx) |
| CH (1) | CH204649A (xx) |
| FR (1) | FR834435A (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1129538B (de) * | 1959-11-14 | 1962-05-17 | Akg Akustische Kino Geraete | Tauchspulenmikrophon |
-
1938
- 1938-02-17 CH CH204649D patent/CH204649A/de unknown
- 1938-02-21 AT AT157075D patent/AT157075B/de active
- 1938-02-28 BE BE426663D patent/BE426663A/xx unknown
- 1938-02-28 FR FR834435D patent/FR834435A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT157075B (de) | 1939-09-25 |
| FR834435A (fr) | 1938-11-21 |
| CH204649A (de) | 1939-05-15 |