|
US2476313A
(en)
*
|
1943-02-25 |
1949-07-19 |
Jr John S Maidlow |
Control system
|
|
US2474257A
(en)
*
|
1943-12-24 |
1949-06-28 |
Edward E Kleinschmidt |
Telegraphic communication system with automatic answer back and alarm signals
|
|
BE471433A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1944-07-26 |
1900-01-01 |
|
|
|
US2456733A
(en)
*
|
1946-05-27 |
1948-12-21 |
Teletype Corp |
Cipher checking system
|
|
US2554793A
(en)
*
|
1947-06-11 |
1951-05-29 |
Teletype Corp |
Radio telegraph system with direction control
|
|
US2579612A
(en)
*
|
1947-06-18 |
1951-12-25 |
Teletype Corp |
Telegraph converter system and apparatus
|
|
US2978676A
(en)
*
|
1950-07-24 |
1961-04-04 |
Rca Corp |
Selective signalling display system with checking and acknowledgment
|
|
US2805278A
(en)
*
|
1951-09-04 |
1957-09-03 |
Nederlanden Staat |
Telegraph system
|
|
BE535482A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1954-02-11 |
|
|
|
|
US2853356A
(en)
*
|
1954-10-29 |
1958-09-23 |
Addressograph Multigraph |
Printing machines
|
|
NL90791C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1954-12-30 |
|
|
|
|
NL107923C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1955-06-28 |
|
|
|
|
NL98117C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1955-07-26 |
|
|
|
|
GB853691A
(en)
*
|
1955-08-05 |
1960-11-09 |
Gerhard Dirks |
A method and means for the automatic repetition of signal transmissions
|
|
US2871289A
(en)
*
|
1955-10-10 |
1959-01-27 |
Gen Electric |
Error-checking system
|
|
US2958727A
(en)
*
|
1955-12-14 |
1960-11-01 |
Ibm |
Checking system for record data transmission
|
|
US2993956A
(en)
*
|
1957-08-09 |
1961-07-25 |
Western Union Telegraph Co |
Error detecting system for telegraph transmission
|
|
US2965882A
(en)
*
|
1958-01-27 |
1960-12-20 |
Westinghouse Air Brake Co |
Remote control system
|
|
US3263217A
(en)
*
|
1960-04-05 |
1966-07-26 |
Philips Corp |
Remote control system
|
|
US3252138A
(en)
*
|
1960-12-20 |
1966-05-17 |
Dresser Ind |
Self-checking digital telemetering system
|
|
US3158684A
(en)
*
|
1960-12-28 |
1964-11-24 |
Fuji Denki Seiko Co Ltd |
System for detecting perforation errors in synchronous printing telegraphic apparatus
|
|
US3175190A
(en)
*
|
1961-02-15 |
1965-03-23 |
Itt |
Machine tool control circuit having a program crossbar switch and a bridge means for checking crosspoints
|
|
US3256514A
(en)
*
|
1962-09-13 |
1966-06-14 |
Digitronics Corp |
Information transfer system
|
|
GB1051700A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1962-12-08 |
|
|
|
|
FR1383788A
(fr)
*
|
1963-08-28 |
1965-01-04 |
Sagem |
Système de transmission de données à correction automatique d'erreurs
|
|
US3378820A
(en)
*
|
1964-08-13 |
1968-04-16 |
Digital Equipment Corp |
Data communication system
|
|
US3380399A
(en)
*
|
1965-06-30 |
1968-04-30 |
North Electric Co |
Remote control and supervision system for a railroad train
|
|
US3535681A
(en)
*
|
1968-02-21 |
1970-10-20 |
Gen Signal Corp |
Code communication system
|
|
US3721958A
(en)
*
|
1971-04-30 |
1973-03-20 |
Gen Electric |
Testing arrangement for a data communication system
|
|
US4024499A
(en)
*
|
1974-06-24 |
1977-05-17 |
Oto-Data, Inc. |
Audiometric system
|
|
US3995258A
(en)
*
|
1975-06-30 |
1976-11-30 |
Honeywell Information Systems, Inc. |
Data processing system having a data integrity technique
|
|
US4525785A
(en)
*
|
1979-10-30 |
1985-06-25 |
Pitney Bowes Inc. |
Electronic postage meter having plural computing system
|
|
US4498187A
(en)
*
|
1979-10-30 |
1985-02-05 |
Pitney Bowes Inc. |
Electronic postage meter having plural computing systems
|