DE297246C - - Google Patents
Info
- Publication number
- DE297246C DE297246C DE1915297246D DE297246DA DE297246C DE 297246 C DE297246 C DE 297246C DE 1915297246 D DE1915297246 D DE 1915297246D DE 297246D A DE297246D A DE 297246DA DE 297246 C DE297246 C DE 297246C
- Authority
- DE
- Germany
- Prior art keywords
- heat conductor
- heat
- carrier
- conductors
- grooves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Adornments (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 |
|---|---|
| DE297246C true DE297246C (ko) |
Family
ID=32831879
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT309415D Active DE309415C (ko) | 1915-02-08 | ||
| DE1915297246D Expired - Lifetime DE297246C (ko) | 1915-02-08 | 1915-02-08 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT309415D Active DE309415C (ko) | 1915-02-08 |
Country Status (4)
| Country | Link |
|---|---|
| DE (2) | DE297246C (ko) |
| FR (2) | FR480855A (ko) |
| GB (2) | GB191505834A (ko) |
| NL (2) | NL4793C (ko) |
-
0
- FR FR20851D patent/FR20851E/fr not_active Expired
- DE DENDAT309415D patent/DE309415C/de active Active
- NL NL4050D patent/NL4050C/xx active
- NL NL4793D patent/NL4793C/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 |
|---|---|
| NL4793C (ko) | |
| DE309415C (ko) | |
| GB191505834A (en) | 1916-04-19 |
| NL4050C (ko) | |
| FR480855A (fr) | 1916-10-04 |
| GB120507A (en) | 1918-11-14 |
| FR20851E (fr) | 1919-07-23 |
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