|
BE435678A
(en:Method)
*
|
1938-08-13 |
|
|
|
|
US2472885A
(en)
*
|
1940-07-19 |
1949-06-14 |
Barber Colman Co |
Automatic multiple stage telegraph system
|
|
US2484838A
(en)
*
|
1940-08-03 |
1949-10-18 |
Western Union Telegraph Co |
Telegraph exchange system
|
|
FR961976A
(en:Method)
*
|
1940-12-24 |
1950-05-26 |
|
|
|
US2425019A
(en)
*
|
1942-04-04 |
1947-08-05 |
Western Union Telegraph Co |
System and apparatus for facsimile telegraphy
|
|
US2430447A
(en)
*
|
1942-06-27 |
1947-11-11 |
Bell Telephone Labor Inc |
Printing telegraph automatic switching system
|
|
US2454301A
(en)
*
|
1943-04-07 |
1948-11-23 |
Bell Telephone Labor Inc |
Telegraph system
|
|
US2573718A
(en)
*
|
1943-08-28 |
1951-11-06 |
Edward E Kleinschmidt |
Telegraph system
|
|
US2570505A
(en)
*
|
1943-09-09 |
1951-10-09 |
Bell Telephone Labor Inc |
Automatic system for checking receipt of telegraph messages in numerical order
|
|
US2451045A
(en)
*
|
1943-12-20 |
1948-10-12 |
Teletype Corp |
Automatic message numbering telegraph transmitter
|
|
US2543199A
(en)
*
|
1943-12-20 |
1951-02-27 |
Teletype Corp |
Message numbering apparatus
|
|
US2502013A
(en)
*
|
1943-12-24 |
1950-03-28 |
Edward E Kleinschmidt |
Telegraphic communication system
|
|
US2474257A
(en)
*
|
1943-12-24 |
1949-06-28 |
Edward E Kleinschmidt |
Telegraphic communication system with automatic answer back and alarm signals
|
|
BE481777A
(en:Method)
*
|
1944-07-26 |
1900-01-01 |
|
|
|
US2472608A
(en)
*
|
1945-01-12 |
1949-06-07 |
Western Union Telegraph Co |
Means and method for switching of telegraph messages
|
|
US2515387A
(en)
*
|
1947-04-15 |
1950-07-18 |
Aho Hjalmar |
Information indicating system
|
|
US2548446A
(en)
*
|
1948-02-02 |
1951-04-10 |
Gen Railway Signal Co |
System for receiving and decoding teletype messages
|
|
GB657760A
(en)
*
|
1948-04-07 |
1951-09-26 |
Standard Telephones Cables Ltd |
Improvements in or relating to electric signalling systems
|
|
US2537199A
(en)
*
|
1948-05-18 |
1951-01-09 |
Western Union Telegraph Co |
Facsimile switching system
|
|
US2582707A
(en)
*
|
1948-07-08 |
1952-01-15 |
Western Union Telegraph Co |
Telegraph switching system with sequence message numbers checking
|
|
US2575329A
(en)
*
|
1949-08-02 |
1951-11-20 |
Western Union Telegraph Co |
Telegraph switching system
|
|
US2654797A
(en)
*
|
1949-09-01 |
1953-10-06 |
Bell Telephone Labor Inc |
Teletypewriter switching system
|
|
DE848967C
(de)
*
|
1950-07-22 |
1952-09-11 |
Siemens Ag |
Schaltungsanordnung zur Steuerung der Waehler in Fernschreibanlagen durch aus Impulskombinationen bestehende Telegrafenzeichen
|
|
US2805283A
(en)
*
|
1951-12-10 |
1957-09-03 |
Gen Telephone Lab Inc |
Automatic telegraph switching system
|
|
BE551314A
(en:Method)
*
|
1953-01-23 |
|
|
|
|
DE1008348B
(de)
*
|
1953-10-13 |
1957-05-16 |
Automatic Elect Lab |
Messschaltung in einer Telegrafenanlage mit Zwischenspeicherung, insbesondere in einer Fernschreibvermittlungsanlage
|
|
US2703338A
(en)
*
|
1953-10-22 |
1955-03-01 |
Automatic Elect Lab |
Semiautomatic message forwarding unit
|
|
DE1010101B
(de)
*
|
1953-11-27 |
1957-06-13 |
Siemens Ag |
Vermittlungsanlage mit Speicherbetrieb, insbesondere fuer Fernschreibzwecke
|
|
US2908759A
(en)
*
|
1954-02-12 |
1959-10-13 |
Gen Telephone Lab Inc |
Automatic toll ticketing telephone systems
|
|
US3039084A
(en)
*
|
1955-03-01 |
1962-06-12 |
Hughes Aircraft Co |
Information position identifying system
|
|
US3002681A
(en)
*
|
1956-08-27 |
1961-10-03 |
Hughes Aircraft Co |
Perforated tape reader
|
|
US3069666A
(en)
*
|
1956-11-02 |
1962-12-18 |
Burroughs Corp |
Magnetic tape storage system
|
|
NL239349A
(en:Method)
*
|
1958-05-20 |
|
|
|
|
US3878510A
(en)
*
|
1974-05-02 |
1975-04-15 |
Bell Telephone Labor Inc |
Addressable switch with variable interval blinding
|
|
US3921138A
(en)
*
|
1974-11-14 |
1975-11-18 |
Bell Telephone Labor Inc |
Multipoint data communications systems utilizing multipoint switches
|