GB531902A - Improvements in or relating to printing telegraph exchange systems - Google Patents
Improvements in or relating to printing telegraph exchange systemsInfo
- Publication number
- GB531902A GB531902A GB2021039A GB2021039A GB531902A GB 531902 A GB531902 A GB 531902A GB 2021039 A GB2021039 A GB 2021039A GB 2021039 A GB2021039 A GB 2021039A GB 531902 A GB531902 A GB 531902A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- line
- circuit
- energized
- lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Structure Of Telephone Exchanges (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL56182D NL56182C (de) | 1939-07-11 | ||
BE441590D BE441590A (de) | 1939-07-11 | ||
GB2021039A GB531902A (en) | 1939-07-11 | 1939-07-11 | Improvements in or relating to printing telegraph exchange systems |
FR867233D FR867233A (fr) | 1939-07-11 | 1940-09-19 | Systèmes téléimprimeurs à bureaux centraux |
DEB10746A DE897265C (de) | 1939-07-11 | 1950-10-01 | Fernschreib-Vermittlungssystem |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2021039A GB531902A (en) | 1939-07-11 | 1939-07-11 | Improvements in or relating to printing telegraph exchange systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB531902A true GB531902A (en) | 1941-01-14 |
Family
ID=10142241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2021039A Expired GB531902A (en) | 1939-07-11 | 1939-07-11 | Improvements in or relating to printing telegraph exchange systems |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE441590A (de) |
DE (1) | DE897265C (de) |
FR (1) | FR867233A (de) |
GB (1) | GB531902A (de) |
NL (1) | NL56182C (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2599344A (en) * | 1941-07-26 | 1952-06-03 | Roelof M M Oberman | Telegraph exchange for lines with simplex or duplex characteristics |
US2602117A (en) * | 1943-09-02 | 1952-07-01 | Roelof M M Oberman | Line adapting telegraph repeater |
US2611815A (en) * | 1941-07-26 | 1952-09-23 | Roelof M M Oberman | Signaling system |
-
0
- BE BE441590D patent/BE441590A/xx unknown
- NL NL56182D patent/NL56182C/xx active
-
1939
- 1939-07-11 GB GB2021039A patent/GB531902A/en not_active Expired
-
1940
- 1940-09-19 FR FR867233D patent/FR867233A/fr not_active Expired
-
1950
- 1950-10-01 DE DEB10746A patent/DE897265C/de not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2599344A (en) * | 1941-07-26 | 1952-06-03 | Roelof M M Oberman | Telegraph exchange for lines with simplex or duplex characteristics |
US2611815A (en) * | 1941-07-26 | 1952-09-23 | Roelof M M Oberman | Signaling system |
US2602117A (en) * | 1943-09-02 | 1952-07-01 | Roelof M M Oberman | Line adapting telegraph repeater |
Also Published As
Publication number | Publication date |
---|---|
DE897265C (de) | 1953-11-19 |
FR867233A (fr) | 1941-10-07 |
NL56182C (de) | |
BE441590A (de) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB531902A (en) | Improvements in or relating to printing telegraph exchange systems | |
US2669606A (en) | Automatic toll trunking system | |
US2557943A (en) | Adaptable repeater in teleprinter switching system | |
GB484658A (en) | Improvements in or relating to telephone or like systems | |
US2376275A (en) | Signaling system | |
US2334551A (en) | Telegraph system | |
US1916239A (en) | Link circuit for interconnecting telegraph toll lines | |
US1415853A (en) | Telephone-exchange system | |
US1459769A (en) | jacobs | |
US2056277A (en) | Telegraph repeating system | |
US1348909A (en) | Telephone toll-circuits | |
US1466856A (en) | Telephone system | |
US1431195A (en) | Telephone-exchange system | |
US2209777A (en) | Telephone system | |
GB319063A (en) | Improvements in and relating to automatic and semi-automatic exchange systems | |
US1545541A (en) | Tandem-operated echo suppressor | |
US1835256A (en) | Telephone system | |
US1567257A (en) | Telephone system | |
US2077917A (en) | Telegraph repeater | |
GB498425A (en) | Improvements in or relating to teleprinter exchange systems | |
US1431995A (en) | Signaling apparatus and circuits | |
US1480614A (en) | Telephone repeater | |
GB533371A (en) | Improvements in or relating to teleprinter exchange systems | |
US1677983A (en) | Printing-telegraph exchange system | |
US1741514A (en) | Telephone system |