BE457138A - - Google Patents
Info
- Publication number
- BE457138A BE457138A BE457138DA BE457138A BE 457138 A BE457138 A BE 457138A BE 457138D A BE457138D A BE 457138DA BE 457138 A BE457138 A BE 457138A
- 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)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL245733X | 1943-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE457138A true BE457138A (fr) |
Family
ID=19780826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE457138D BE457138A (fr) | 1943-07-09 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2509968A (fr) |
| BE (1) | BE457138A (fr) |
| CH (1) | CH245733A (fr) |
| DE (1) | DE847355C (fr) |
| FR (1) | FR906858A (fr) |
| GB (1) | GB619182A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2858375A (en) * | 1955-10-11 | 1958-10-28 | Rca Corp | Wide range dynamic phonograph pickup |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1689339A (en) * | 1923-12-15 | 1928-10-30 | Western Electric Co | Energy-translation system |
| US1785047A (en) * | 1927-09-14 | 1930-12-16 | Rca Corp | Method and means for cutting phonograph records |
| GB384531A (en) * | 1931-04-22 | 1932-12-08 | Paillard & Cie Sa E | Improvements in or relating to gramophone pick-ups |
| US2025388A (en) * | 1934-09-05 | 1935-12-24 | Bell Telephone Labor Inc | Sound reproducing system |
| NL61306C (fr) * | 1937-10-07 | |||
| US2290057A (en) * | 1938-09-12 | 1942-07-14 | Jr Theodore Lindenberg | Sound recording and reproducing mechanism |
-
0
- BE BE457138D patent/BE457138A/xx unknown
-
1944
- 1944-07-06 DE DEN2559D patent/DE847355C/de not_active Expired
- 1944-07-07 CH CH245733D patent/CH245733A/de unknown
- 1944-08-29 FR FR906858D patent/FR906858A/fr not_active Expired
-
1946
- 1946-07-20 US US685192A patent/US2509968A/en not_active Expired - Lifetime
- 1946-11-25 GB GB34927/46A patent/GB619182A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB619182A (en) | 1949-03-04 |
| US2509968A (en) | 1950-05-30 |
| FR906858A (fr) | 1946-02-22 |
| DE847355C (de) | 1952-08-25 |
| CH245733A (de) | 1946-11-30 |