BE509055A - - Google Patents
Info
- Publication number
- BE509055A BE509055A BE509055DA BE509055A BE 509055 A BE509055 A BE 509055A BE 509055D A BE509055D A BE 509055DA BE 509055 A BE509055 A BE 509055A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL314169X | 1951-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE509055A true BE509055A (US07223432-20070529-C00017.png) |
Family
ID=19783749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE509055D BE509055A (US07223432-20070529-C00017.png) | 1951-02-19 |
Country Status (6)
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE322105C (de) * | 1912-09-27 | 1920-06-22 | Western Electric Co Ltd | Schaltungsanordnung fuer Fernsprechanlagen, bei denen anrufende Leitungen mittels selbsttaetiger Schaltwerke an Verbindungsstromkreise angeschlossen werden |
| GB333259A (en) * | 1929-05-14 | 1930-08-14 | Gerald Deakin | Improvements in or relating to automatic and semi-automatic telephone exchange systems |
-
0
- NL NL6815570.A patent/NL159336B/xx unknown
- NL NL87360D patent/NL87360C/xx active
- BE BE509055D patent/BE509055A/xx unknown
-
1952
- 1952-02-06 CH CH314169D patent/CH314169A/fr unknown
- 1952-02-08 FR FR1058853D patent/FR1058853A/fr not_active Expired
- 1952-02-09 DE DEST4436A patent/DE936273C/de not_active Expired
- 1952-02-11 GB GB3617/52A patent/GB710203A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB710203A (en) | 1954-06-09 |
| DE936273C (de) | 1955-12-07 |
| NL87360C (US07223432-20070529-C00017.png) | |
| NL159336B (nl) | |
| CH314169A (fr) | 1956-05-31 |
| FR1058853A (fr) | 1954-03-19 |
