BE728587A - - Google Patents
Info
- Publication number
- BE728587A BE728587A BE728587DA BE728587A BE 728587 A BE728587 A BE 728587A BE 728587D A BE728587D A BE 728587DA BE 728587 A BE728587 A BE 728587A
- 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
- H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK73668A DK121241B (da) | 1968-02-23 | 1968-02-23 | Dobbeltomstiller til tilslutning af to telefonapparater til samme abonnentledning i et telefonanlæg. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE728587A true BE728587A (cs) | 1969-08-01 |
Family
ID=8096952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE728587D BE728587A (cs) | 1968-02-23 | 1969-02-18 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE728587A (cs) |
| CH (1) | CH488366A (cs) |
| DE (1) | DE1909225B2 (cs) |
| DK (1) | DK121241B (cs) |
-
1968
- 1968-02-23 DK DK73668A patent/DK121241B/da unknown
-
1969
- 1969-02-18 BE BE728587D patent/BE728587A/xx unknown
- 1969-02-21 CH CH278269A patent/CH488366A/de not_active IP Right Cessation
- 1969-02-24 DE DE19691909225 patent/DE1909225B2/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1909225A1 (de) | 1969-09-04 |
| CH488366A (de) | 1970-03-31 |
| DE1909225B2 (de) | 1970-08-13 |
| DK121241B (da) | 1971-09-27 |