BE489131A - - Google Patents
Info
- Publication number
- BE489131A BE489131A BE489131DA BE489131A BE 489131 A BE489131 A BE 489131A BE 489131D A BE489131D A BE 489131DA BE 489131 A BE489131 A BE 489131A
- 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 |
|---|---|---|---|
| CH984301X | 1948-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE489131A true BE489131A (en:Method) |
Family
ID=4551502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE489131D BE489131A (en:Method) | 1948-12-15 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE489131A (en:Method) |
| FR (1) | FR984301A (en:Method) |
-
0
- BE BE489131D patent/BE489131A/xx unknown
-
1949
- 1949-04-07 FR FR984301D patent/FR984301A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR984301A (fr) | 1951-07-04 |