BE473416A - - Google Patents
Info
- Publication number
- BE473416A BE473416A BE473416DA BE473416A BE 473416 A BE473416 A BE 473416A BE 473416D A BE473416D A BE 473416DA BE 473416 A BE473416 A BE 473416A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Moving Of Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US250729A US2213936A (en) | 1939-01-13 | 1939-01-13 | Electrodynamic pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE473416A true BE473416A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) |
Family
ID=22948908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE473416D BE473416A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) | 1939-01-13 |
Country Status (4)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416082A (en) * | 1944-08-08 | 1947-02-18 | Soundscriber Corp | Humless electrodynamic pickup |
| US2542457A (en) * | 1946-12-31 | 1951-02-20 | Soundscriber Corp | Electrodynamic pickup |
| US2514379A (en) * | 1947-08-25 | 1950-07-11 | Jr Charles R Douglass | Electrodynamic recording head |
| US2534725A (en) * | 1948-07-15 | 1950-12-19 | Stewart M Miller | Electrodynamic pickup hearing u-shaped coil holder |
-
0
- BE BE473416D patent/BE473416A/xx unknown
-
1939
- 1939-01-13 US US250729A patent/US2213936A/en not_active Expired - Lifetime
-
1947
- 1947-05-02 GB GB11847/47A patent/GB626782A/en not_active Expired
- 1947-05-16 FR FR946860D patent/FR946860A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB626782A (en) | 1949-07-21 |
| US2213936A (en) | 1940-09-03 |
| FR946860A (fr) | 1949-06-16 |