LU45451A1 - - Google Patents
Info
- Publication number
- LU45451A1 LU45451A1 LU45451DA LU45451A1 LU 45451 A1 LU45451 A1 LU 45451A1 LU 45451D A LU45451D A LU 45451DA LU 45451 A1 LU45451 A1 LU 45451A1
- Authority
- LU
- Luxembourg
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES83817A DE1176722B (de) | 1963-02-20 | 1963-02-20 | Schaltungsanordnung fuer Fernsprechvermitt-lungsanlagen mit Wahlzeichensendern fuer Ton-frequenzwahl an den Teilnehmerstellen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU45451A1 true LU45451A1 (US20110009641A1-20110113-C00116.png) | 1964-04-18 |
Family
ID=7511281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU45451D LU45451A1 (US20110009641A1-20110113-C00116.png) | 1963-02-20 | 1964-02-18 |
Country Status (7)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1242672B (de) * | 1964-09-10 | 1967-06-22 | Siemens Ag | Schaltungsanordnung fuer Fernmelde-, insbesondere Fernsprechanlagen, in denen von den Teilnehmerstellen Wahlkennzeichen und Informationskennzeichen ausgesendet werden |
| US3700823A (en) * | 1971-09-02 | 1972-10-24 | Northern Electric Co | Combined alarm transmission and service call system |
| DE2450189B2 (de) * | 1974-10-22 | 1976-08-26 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur einleitung einer informationsuebertragung zu einer aufnahmeeinrichtung waehrend einer ueber eine verbindungsleitung bestehenden fernsprechverbindung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3133155A (en) * | 1960-09-27 | 1964-05-12 | Bell Telephone Labor Inc | Signal converter circuit |
-
0
- NL NL302827D patent/NL302827A/xx unknown
-
1963
- 1963-02-20 DE DES83817A patent/DE1176722B/de active Pending
- 1963-12-31 NL NL63302827A patent/NL146684B/xx unknown
-
1964
- 1964-02-18 US US345804A patent/US3427404A/en not_active Expired - Lifetime
- 1964-02-18 CH CH196264A patent/CH410067A/de unknown
- 1964-02-18 LU LU45451D patent/LU45451A1/xx unknown
- 1964-02-19 GB GB6847/64A patent/GB1007100A/en not_active Expired
- 1964-02-20 BE BE644137D patent/BE644137A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH410067A (de) | 1966-03-31 |
| NL302827A (US20110009641A1-20110113-C00116.png) | |
| US3427404A (en) | 1969-02-11 |
| GB1007100A (en) | 1965-10-13 |
| DE1176722B (de) | 1964-08-27 |
| BE644137A (US20110009641A1-20110113-C00116.png) | 1964-08-20 |
| NL146684B (nl) | 1975-07-15 |
