BE474740A - - Google Patents
Info
- Publication number
- BE474740A BE474740A BE474740DA BE474740A BE 474740 A BE474740 A BE 474740A BE 474740D A BE474740D A BE 474740DA BE 474740 A BE474740 A BE 474740A
- Authority
- BE
- Belgium
- Prior art keywords
- amplifier
- bulb
- tube
- miniature
- compartment
- Prior art date
Links
- 238000005192 partition Methods 0.000 claims description 32
- 230000000630 rising effect Effects 0.000 claims 1
- 230000002411 adverse Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 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
- 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)
- Battery Mounting, Suspending (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE474740A true BE474740A (fa) |
Family
ID=123662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE474740D BE474740A (fa) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE474740A (fa) |
-
0
- BE BE474740D patent/BE474740A/fr unknown
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