BE528973A - - Google Patents
Info
- Publication number
- BE528973A BE528973A BE528973DA BE528973A BE 528973 A BE528973 A BE 528973A BE 528973D A BE528973D A BE 528973DA BE 528973 A BE528973 A BE 528973A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1101062X | 1953-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE528973A true BE528973A (en:Method) |
Family
ID=4557490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE528973D BE528973A (en:Method) | 1953-05-28 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE528973A (en:Method) |
| CH (1) | CH314514A (en:Method) |
| FR (1) | FR1101062A (en:Method) |
-
0
- BE BE528973D patent/BE528973A/xx unknown
-
1953
- 1953-05-28 CH CH314514D patent/CH314514A/de unknown
-
1954
- 1954-05-21 FR FR1101062D patent/FR1101062A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1101062A (fr) | 1955-09-27 |
| CH314514A (de) | 1956-06-15 |