NL17774C - - Google Patents
Info
- Publication number
- NL17774C NL17774C NL17774DA NL17774C NL 17774 C NL17774 C NL 17774C NL 17774D A NL17774D A NL 17774DA NL 17774 C NL17774 C NL 17774C
- 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
- H04R19/00—Electrostatic transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE246728X | 1925-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL17774C true NL17774C (fr) |
Family
ID=5935188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL17774D NL17774C (fr) | 1925-04-07 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | USRE17257E (fr) |
| FR (1) | FR601369A (fr) |
| GB (1) | GB246728A (fr) |
| NL (1) | NL17774C (fr) |
-
0
- US US17257D patent/USRE17257E/en not_active Expired
- NL NL17774D patent/NL17774C/xx active
-
1925
- 1925-07-20 GB GB18526/25A patent/GB246728A/en not_active Expired
- 1925-07-28 FR FR601369D patent/FR601369A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR601369A (fr) | 1926-03-01 |
| GB246728A (en) | 1926-02-04 |
| USRE17257E (en) | 1929-04-02 |