DE296134C - - Google Patents
Info
- Publication number
- DE296134C DE296134C DE1915296134D DE296134DA DE296134C DE 296134 C DE296134 C DE 296134C DE 1915296134 D DE1915296134 D DE 1915296134D DE 296134D A DE296134D A DE 296134DA DE 296134 C DE296134 C DE 296134C
- Authority
- DE
- Germany
- Prior art keywords
- acid
- wollaston
- heat conductors
- sounder
- abandoned
- 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
- 239000002253 acid Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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)
- Wire Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE296134T | 1915-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE296134C true DE296134C (enrdf_load_stackoverflow) |
Family
ID=32668492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1915296134D Expired - Lifetime DE296134C (enrdf_load_stackoverflow) | 1915-02-09 | 1915-02-09 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE296134C (enrdf_load_stackoverflow) |
| FR (1) | FR480856A (enrdf_load_stackoverflow) |
| GB (1) | GB191505835A (enrdf_load_stackoverflow) |
-
1915
- 1915-02-09 DE DE1915296134D patent/DE296134C/de not_active Expired - Lifetime
- 1915-04-19 GB GB191505835D patent/GB191505835A/en not_active Expired
-
1916
- 1916-02-04 FR FR480856D patent/FR480856A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR480856A (fr) | 1916-10-04 |
| GB191505835A (en) | 1916-04-19 |
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