BE517356A - - Google Patents
Info
- Publication number
- BE517356A BE517356A BE517356DA BE517356A BE 517356 A BE517356 A BE 517356A BE 517356D A BE517356D A BE 517356DA BE 517356 A BE517356 A BE 517356A
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE727618X | 1952-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE517356A true BE517356A (en:Method) |
Family
ID=20316167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE517356D BE517356A (en:Method) | 1952-02-04 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE517356A (en:Method) |
| DE (1) | DE953266C (en:Method) |
| GB (1) | GB727618A (en:Method) |
-
0
- BE BE517356D patent/BE517356A/xx unknown
-
1953
- 1953-02-03 DE DET7351A patent/DE953266C/de not_active Expired
- 1953-02-04 GB GB3181/53A patent/GB727618A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB727618A (en) | 1955-04-06 |
| DE953266C (de) | 1956-11-29 |