NL4050C - - Google Patents
Info
- Publication number
- NL4050C NL4050C NL4050DA NL4050C NL 4050 C NL4050 C NL 4050C NL 4050D A NL4050D A NL 4050DA NL 4050 C NL4050 C NL 4050C
- 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
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
- H04R23/002—Transducers other than those covered by groups H04R9/00 - H04R21/00 using electrothermic-effect transducer
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Resistance Heating (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Adornments (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE297246X | 1915-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL4050C true NL4050C (de) |
Family
ID=32831879
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL4793D NL4793C (de) | 1915-02-08 | ||
| NL4050D NL4050C (de) | 1915-02-08 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL4793D NL4793C (de) | 1915-02-08 |
Country Status (4)
| Country | Link |
|---|---|
| DE (2) | DE297246C (de) |
| FR (2) | FR480855A (de) |
| GB (2) | GB191505834A (de) |
| NL (2) | NL4050C (de) |
-
0
- DE DENDAT309415D patent/DE309415C/de active Active
- FR FR20851D patent/FR20851E/fr not_active Expired
- NL NL4793D patent/NL4793C/xx active
- NL NL4050D patent/NL4050C/xx active
-
1915
- 1915-02-08 DE DE1915297246D patent/DE297246C/de not_active Expired - Lifetime
- 1915-04-19 GB GB191505834D patent/GB191505834A/en not_active Expired
-
1916
- 1916-02-04 FR FR480855D patent/FR480855A/fr not_active Expired
-
1918
- 1918-03-08 GB GB412018A patent/GB120507A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR20851E (fr) | 1919-07-23 |
| GB191505834A (en) | 1916-04-19 |
| DE297246C (de) | |
| GB120507A (en) | 1918-11-14 |
| NL4793C (de) | |
| DE309415C (de) | |
| FR480855A (fr) | 1916-10-04 |