NL28049C - - Google Patents
Info
- Publication number
- NL28049C NL28049C NL28049DA NL28049C NL 28049 C NL28049 C NL 28049C NL 28049D A NL28049D A NL 28049DA NL 28049 C NL28049 C NL 28049C
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2415728A GB317641A (en) | 1928-08-22 | 1928-08-22 | Improvements relating to electromagnetic sound reproducing devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28049C true NL28049C (sv) |
Family
ID=10207278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28049D NL28049C (sv) | 1928-08-22 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE363178A (sv) |
| GB (1) | GB317641A (sv) |
| NL (1) | NL28049C (sv) |
-
0
- NL NL28049D patent/NL28049C/xx active
- BE BE363178D patent/BE363178A/xx unknown
-
1928
- 1928-08-22 GB GB2415728A patent/GB317641A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB317641A (en) | 1929-08-22 |
| BE363178A (sv) |