BE442183A - - Google Patents
Info
- Publication number
- BE442183A BE442183A BE442183DA BE442183A BE 442183 A BE442183 A BE 442183A BE 442183D A BE442183D A BE 442183DA BE 442183 A BE442183 A BE 442183A
- Authority
- BE
- Belgium
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
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/021—Microphones with granular resistance material
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 |
|---|---|---|---|
| BE442183T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE442183A true BE442183A (fr) |
Family
ID=3869679
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE442183D BE442183A (fr) | |||
| BE439769D BE439769A (fr) | |||
| BE446109D BE446109A (fr) |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE439769D BE439769A (fr) | |||
| BE446109D BE446109A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| BE (3) | BE446109A (fr) |
-
0
- BE BE442183D patent/BE442183A/xx unknown
- BE BE439769D patent/BE439769A/fr unknown
- BE BE446109D patent/BE446109A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE439769A (fr) | |
| BE446109A (fr) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BE439769A (fr) |