BE463852A - - Google Patents
Info
- Publication number
- BE463852A BE463852A BE463852DA BE463852A BE 463852 A BE463852 A BE 463852A BE 463852D A BE463852D A BE 463852DA BE 463852 A BE463852 A BE 463852A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/42—Circuits for by-passing of ringing signals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH916162X | 1944-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE463852A true BE463852A (zh) |
Family
ID=4547839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE463852D BE463852A (zh) | 1944-09-13 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE463852A (zh) |
| CH (1) | CH241540A (zh) |
| FR (1) | FR916162A (zh) |
-
0
- BE BE463852D patent/BE463852A/xx unknown
-
1944
- 1944-09-13 CH CH241540D patent/CH241540A/de unknown
-
1945
- 1945-10-23 FR FR916162D patent/FR916162A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH241540A (de) | 1946-03-15 |
| FR916162A (fr) | 1946-11-28 |