BE538719A - - Google Patents
Info
- Publication number
- BE538719A BE538719A BE538719DA BE538719A BE 538719 A BE538719 A BE 538719A BE 538719D A BE538719D A BE 538719DA BE 538719 A BE538719 A BE 538719A
- Authority
- BE
- Belgium
- Prior art keywords
- microphone
- crown
- loudspeaker
- frame
- desc
- Prior art date
Links
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 239000002966 varnish Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/62—Constructional arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE538719A true BE538719A (show.php) |
Family
ID=168652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE538719D BE538719A (show.php) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE538719A (show.php) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811406A (en) * | 1982-03-31 | 1989-03-07 | Pioneer Electronic Corporation | Compound speaker system |
-
0
- BE BE538719D patent/BE538719A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811406A (en) * | 1982-03-31 | 1989-03-07 | Pioneer Electronic Corporation | Compound speaker system |
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