BE507124A - - Google Patents
Info
- Publication number
- BE507124A BE507124A BE507124DA BE507124A BE 507124 A BE507124 A BE 507124A BE 507124D A BE507124D A BE 507124DA BE 507124 A BE507124 A BE 507124A
- 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)
- Exchange Systems With Centralized Control (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| DE301278X | 1950-12-20 | 
Publications (1)
| Publication Number | Publication Date | 
|---|---|
| BE507124A true BE507124A (en:Method) | 
Family
ID=6099070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date | 
|---|---|---|---|
| BE507124D BE507124A (en:Method) | 1950-12-20 | 
Country Status (7)
| Country | Link | 
|---|---|
| US (1) | US2803705A (en:Method) | 
| BE (1) | BE507124A (en:Method) | 
| CH (1) | CH301278A (en:Method) | 
| FR (1) | FR1048874A (en:Method) | 
| GB (1) | GB718438A (en:Method) | 
| LU (1) | LU30973A1 (en:Method) | 
| NL (2) | NL86168C (en:Method) | 
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title | 
|---|---|---|---|---|
| GB516408A (en) * | 1938-06-14 | 1940-01-01 | Justin Erwin Pollak | Improvements in or relating to automatic or semi-automatic telephone systems | 
| CH255842A (de) * | 1941-07-11 | 1948-07-15 | Standard Telephon & Radio Ag | Fernmeldeanlage. | 
| US2554155A (en) * | 1946-12-13 | 1951-05-22 | Bell Telephone Labor Inc | Ground trainer for training aircraft crews | 
| NL84066C (en:Method) * | 1949-01-29 | |||
| US2597209A (en) * | 1950-02-11 | 1952-05-20 | Automatic Elect Lab | Telephone system | 
- 
        0
        - BE BE507124D patent/BE507124A/xx unknown
- NL NL7608618.A patent/NL164083B/xx unknown
- LU LU30973D patent/LU30973A1/xx unknown
- NL NL86168D patent/NL86168C/xx active
 
- 
        1951
        - 1951-08-27 CH CH301278D patent/CH301278A/de unknown
- 1951-10-17 FR FR1048874D patent/FR1048874A/fr not_active Expired
- 1951-10-31 GB GB25507/51A patent/GB718438A/en not_active Expired
- 1951-12-17 US US262002A patent/US2803705A/en not_active Expired - Lifetime
 
Also Published As
| Publication number | Publication date | 
|---|---|
| FR1048874A (fr) | 1953-12-24 | 
| NL164083B (nl) | |
| GB718438A (en) | 1954-11-17 | 
| LU30973A1 (en:Method) | |
| NL86168C (en:Method) | |
| US2803705A (en) | 1957-08-20 | 
| CH301278A (de) | 1954-08-31 |