NL77992C - - Google Patents
Info
- Publication number
- NL77992C NL77992C NL77992DA NL77992C NL 77992 C NL77992 C NL 77992C NL 77992D A NL77992D A NL 77992DA NL 77992 C NL77992 C NL 77992C
- 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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R17/06—Gramophone pick-ups using a stylus; Recorders using a stylus comprising two or more styli or transducers
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2701280X | 1950-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL77992C true NL77992C (xx) |
Family
ID=10913743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL77992D NL77992C (xx) | 1950-03-02 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2701280A (xx) |
| FR (1) | FR1033266A (xx) |
| NL (1) | NL77992C (xx) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2875353A (en) * | 1953-05-29 | 1959-02-24 | Philco Corp | Electromechanical reed system |
| FR1136043A (fr) * | 1954-09-20 | 1957-05-07 | Cosmocord Ltd | Perfectionnements aux transducteurs électromécaniques |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE474895A (xx) * | 1941-01-31 | |||
| US2479894A (en) * | 1942-02-11 | 1949-08-23 | Marshall Seeburg N | Pickup with two needles |
| US2594948A (en) * | 1947-10-30 | 1952-04-29 | Brush Dev Co | Electromechanical transducer unit |
| US2617895A (en) * | 1948-10-05 | 1952-11-11 | Astatic Corp | Electrical phonograph transducer with multiple styli |
| US2570578A (en) * | 1949-03-11 | 1951-10-09 | Magnavox Co | Dual stylus phonograph pickup |
-
0
- NL NL77992D patent/NL77992C/xx active
-
1951
- 1951-02-27 US US212850A patent/US2701280A/en not_active Expired - Lifetime
- 1951-03-01 FR FR1033266D patent/FR1033266A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1033266A (fr) | 1953-07-09 |
| US2701280A (en) | 1955-02-01 |