DE274363C - - Google Patents
Info
- Publication number
- DE274363C DE274363C DENDAT274363D DE274363DA DE274363C DE 274363 C DE274363 C DE 274363C DE NDAT274363 D DENDAT274363 D DE NDAT274363D DE 274363D A DE274363D A DE 274363DA DE 274363 C DE274363 C DE 274363C
- Authority
- DE
- Germany
- Prior art keywords
- batteries
- bridge
- slide
- contacts
- rear wall
- 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/04—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception comprising pocket amplifiers
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Casings For Electric Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE274363C true DE274363C (OSRAM) |
Family
ID=530738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT274363D Active DE274363C (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE274363C (OSRAM) |
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0
- DE DENDAT274363D patent/DE274363C/de active Active
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