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 (it) |
Family
ID=20316167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE517356D BE517356A (it) | 1952-02-04 |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE517356A (it) |
DE (1) | DE953266C (it) |
GB (1) | GB727618A (it) |
-
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 |
---|---|
DE953266C (de) | 1956-11-29 |
GB727618A (en) | 1955-04-06 |