NL75135C - - Google Patents
Info
- Publication number
- NL75135C NL75135C NL75135DA NL75135C NL 75135 C NL75135 C NL 75135C NL 75135D A NL75135D A NL 75135DA NL 75135 C NL75135 C NL 75135C
- Authority
- NL
- Netherlands
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
-
- 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
- H04R9/16—Gramophone pick-ups using a stylus; Recorders using a stylus signals recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK646180X | 1947-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL75135C true NL75135C (en) |
Family
ID=8151990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL75135D NL75135C (en) | 1947-01-11 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2617894A (en) |
| DE (1) | DE823799C (en) |
| GB (1) | GB646180A (en) |
| NL (1) | NL75135C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1134527B (en) * | 1960-01-30 | 1962-08-09 | Georg Neumann | Electromechanical converter with negative feedback for recording and reproducing sound vibrations in single-component writing |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1535538A (en) * | 1923-01-03 | 1925-04-28 | Western Electric Co | Vibratory system |
| US1833070A (en) * | 1929-04-15 | 1931-11-24 | Conner Crouse Corp | Electromechanical translating device |
| US1803273A (en) * | 1929-07-25 | 1931-04-28 | Cleveland Trust Co | Phonograph pick-up |
| US1995177A (en) * | 1932-12-10 | 1935-03-19 | Rca Corp | Electromagnetic pick up device |
| US2155469A (en) * | 1936-05-29 | 1939-04-25 | Rca Corp | Signal translating apparatus |
| NL61306C (en) * | 1937-10-07 | |||
| US2386089A (en) * | 1944-03-31 | 1945-10-02 | Philco Radio & Television Corp | Phonograph pickup device |
| BE473326A (en) * | 1944-09-07 | |||
| US2410329A (en) * | 1944-09-08 | 1946-10-29 | Philco Corp | Electrical apparatus |
| US2461190A (en) * | 1945-08-04 | 1949-02-08 | Eastman Kodak Co | Adjustable mount for optical elements |
-
0
- NL NL75135D patent/NL75135C/xx active
-
1948
- 1948-01-09 GB GB790/48A patent/GB646180A/en not_active Expired
- 1948-01-10 US US1624A patent/US2617894A/en not_active Expired - Lifetime
-
1950
- 1950-04-21 DE DEE1027A patent/DE823799C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE823799C (en) | 1951-12-06 |
| US2617894A (en) | 1952-11-11 |
| GB646180A (en) | 1950-11-15 |