FR745190A - - Google Patents
Info
- Publication number
- FR745190A FR745190A FR745190DA FR745190A FR 745190 A FR745190 A FR 745190A FR 745190D A FR745190D A FR 745190DA FR 745190 A FR745190 A FR 745190A
- 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
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/10—Control of transmission; Equalising by pilot signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Attenuators (AREA)
- Amplifiers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE410108X | 1931-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR745190A true FR745190A (de) | 1933-05-06 |
Family
ID=20309543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR745190D Expired FR745190A (de) | 1931-11-10 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE604026C (de) |
| FR (1) | FR745190A (de) |
| GB (1) | GB410108A (de) |
| NL (1) | NL34700C (de) |
-
0
- NL NL34700D patent/NL34700C/xx active
- FR FR745190D patent/FR745190A/fr not_active Expired
-
1931
- 1931-12-25 DE DET39980D patent/DE604026C/de not_active Expired
-
1932
- 1932-11-07 GB GB31387/32A patent/GB410108A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL34700C (de) | |
| GB410108A (en) | 1934-05-07 |
| DE604026C (de) | 1934-10-16 |