NL29139C - - Google Patents
Info
- Publication number
- NL29139C NL29139C NL48260A NL48260A NL29139C NL 29139 C NL29139 C NL 29139C NL 48260 A NL48260 A NL 48260A NL 48260 A NL48260 A NL 48260A NL 29139 C NL29139 C NL 29139C
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/16—Mounting or connecting stylus to transducer with or without damping means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US326941A US1816906A (en) | 1928-12-19 | 1928-12-19 | Electromagnetic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL29139C true NL29139C (ja) |
Family
ID=23274434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL48260A NL29139C (ja) | 1928-12-19 | 1929-09-27 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1816906A (ja) |
| FR (1) | FR683390A (ja) |
| GB (1) | GB340219A (ja) |
| NL (1) | NL29139C (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2508783A (en) * | 1945-02-16 | 1950-05-23 | Lionel B Cornwell | Electrical sound translating device |
-
1928
- 1928-12-19 US US326941A patent/US1816906A/en not_active Expired - Lifetime
-
1929
- 1929-09-20 GB GB28605/29A patent/GB340219A/en not_active Expired
- 1929-09-27 NL NL48260A patent/NL29139C/xx active
- 1929-10-16 FR FR683390D patent/FR683390A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1816906A (en) | 1931-08-04 |
| FR683390A (fr) | 1930-06-11 |
| GB340219A (en) | 1930-12-22 |