BE494409A - - Google Patents
Info
- Publication number
- BE494409A BE494409A BE494409DA BE494409A BE 494409 A BE494409 A BE 494409A BE 494409D A BE494409D A BE 494409DA BE 494409 A BE494409 A BE 494409A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1011927T | 1949-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE494409A true BE494409A (en:Method) |
Family
ID=9570365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494409D BE494409A (en:Method) | 1949-04-25 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE494409A (en:Method) |
| FR (1) | FR1011927A (en:Method) |
-
0
- BE BE494409D patent/BE494409A/xx unknown
-
1949
- 1949-04-25 FR FR1011927D patent/FR1011927A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1011927A (fr) | 1952-07-01 |