NL28789C - - Google Patents
Info
- Publication number
- NL28789C NL28789C NL28789DA NL28789C NL 28789 C NL28789 C NL 28789C NL 28789D A NL28789D A NL 28789DA NL 28789 C NL28789 C NL 28789C
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB693435X | 1929-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28789C true NL28789C (ja�@�@) |
Family
ID=10493274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28789D NL28789C (ja�@�@) | 1929-05-19 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR693435A (ja�@�@) |
| NL (1) | NL28789C (ja�@�@) |
-
0
- NL NL28789D patent/NL28789C/xx active
-
1930
- 1930-04-05 FR FR693435D patent/FR693435A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR693435A (fr) | 1930-11-20 |