NL87399C - - Google Patents
Info
- Publication number
- NL87399C NL87399C NL87399DA NL87399C NL 87399 C NL87399 C NL 87399C NL 87399D A NL87399D A NL 87399DA NL 87399 C NL87399 C NL 87399C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1059013XA | 1951-05-22 | 1951-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL87399C true NL87399C (en:Method) |
Family
ID=22308422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL87399D NL87399C (en:Method) | 1951-05-22 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1059013A (en:Method) |
| NL (1) | NL87399C (en:Method) |
-
0
- NL NL87399D patent/NL87399C/xx active
-
1952
- 1952-04-04 FR FR1059013D patent/FR1059013A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1059013A (fr) | 1954-03-22 |