DE273228C - - Google Patents
Info
- Publication number
- DE273228C DE273228C DENDAT273228D DE273228DA DE273228C DE 273228 C DE273228 C DE 273228C DE NDAT273228 D DENDAT273228 D DE NDAT273228D DE 273228D A DE273228D A DE 273228DA DE 273228 C DE273228 C DE 273228C
- Authority
- DE
- Germany
- Prior art keywords
- hook
- hearing device
- post
- hearing
- telephone
- 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
- 210000000078 claw Anatomy 0.000 claims description 5
- 206010048865 Hypoacusis Diseases 0.000 claims description 3
- 239000002775 capsule Substances 0.000 description 5
- 240000007817 Olea europaea Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 239000000725 suspension 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
- H04R27/00—Public address systems
- H04R27/02—Amplifying systems for the deaf
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE273228C true DE273228C (cg-RX-API-DMAC10.html) |
Family
ID=529700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT273228D Active DE273228C (cg-RX-API-DMAC10.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE273228C (cg-RX-API-DMAC10.html) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2544027A (en) * | 1948-07-16 | 1951-03-06 | Raymond E King | Hearing aid attachment for use on french type telephones |
-
0
- DE DENDAT273228D patent/DE273228C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2544027A (en) * | 1948-07-16 | 1951-03-06 | Raymond E King | Hearing aid attachment for use on french type telephones |
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