FR867360A - - Google Patents
Info
- Publication number
- FR867360A FR867360A FR867360DA FR867360A FR 867360 A FR867360 A FR 867360A FR 867360D A FR867360D A FR 867360DA FR 867360 A FR867360 A FR 867360A
- Authority
- FR
- France
- 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.)
- Expired
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR867360A true FR867360A (en) | 1941-10-18 |
Family
ID=1555430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR867360D Expired FR867360A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR867360A (en) |
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0
- FR FR867360D patent/FR867360A/fr not_active Expired