BE364208A - - Google Patents
Info
- Publication number
- BE364208A BE364208A BE364208DA BE364208A BE 364208 A BE364208 A BE 364208A BE 364208D A BE364208D A BE 364208DA BE 364208 A BE364208 A BE 364208A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE682630X | 1928-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE364208A true BE364208A (en:Method) |
Family
ID=6597201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE364208D BE364208A (en:Method) | 1928-10-03 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE364208A (en:Method) |
| FR (1) | FR682630A (en:Method) |
-
0
- BE BE364208D patent/BE364208A/xx unknown
-
1929
- 1929-10-02 FR FR682630D patent/FR682630A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR682630A (fr) | 1930-05-30 |