DE174988C - - Google Patents
Info
- Publication number
- DE174988C DE174988C DENDAT174988D DE174988DA DE174988C DE 174988 C DE174988 C DE 174988C DE NDAT174988 D DENDAT174988 D DE NDAT174988D DE 174988D A DE174988D A DE 174988DA DE 174988 C DE174988 C DE 174988C
- Authority
- DE
- Germany
- Prior art keywords
- housing
- cone
- mouthpiece
- horn
- conical
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE174988T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE174988C true DE174988C (https=) |
Family
ID=5691614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT174988D Active DE174988C (https=) |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE174988C (https=) |
| FR (1) | FR357990A (https=) |
-
0
- DE DENDAT174988D patent/DE174988C/de active Active
-
1905
- 1905-09-23 FR FR357990A patent/FR357990A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR357990A (fr) | 1906-01-22 |
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