NL40077C - - Google Patents
Info
- Publication number
- NL40077C NL40077C NL40077DA NL40077C NL 40077 C NL40077 C NL 40077C NL 40077D A NL40077D A NL 40077DA NL 40077 C NL40077 C NL 40077C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2379434A GB439752A (en) | 1934-08-17 | 1934-08-17 | Improvements in telephone repeaters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL40077C true NL40077C (ja�@�@) |
Family
ID=10201426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL40077D NL40077C (ja�@�@) | 1934-08-17 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE404976A (ja�@�@) |
| FR (1) | FR781474A (ja�@�@) |
| GB (1) | GB439752A (ja�@�@) |
| NL (1) | NL40077C (ja�@�@) |
-
0
- BE BE404976D patent/BE404976A/xx unknown
- FR FR781474D patent/FR781474A/fr not_active Expired
- NL NL40077D patent/NL40077C/xx active
-
1934
- 1934-08-17 GB GB2379434A patent/GB439752A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB439752A (en) | 1935-12-13 |
| FR781474A (ja�@�@) | 1935-05-16 |
| BE404976A (ja�@�@) |