|
US3639694A
(en)
*
|
1969-01-15 |
1972-02-01 |
Ibm |
Time division multiplex communications system
|
|
SE318914B
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1969-03-18 |
1969-12-22 |
Ericsson Telefon Ab L M |
|
|
DE1951142C2
(de)
*
|
1969-10-10 |
1986-02-13 |
Karl-Heinz Dr. 4802 Halle Sengewald |
Verfahren zum Herstellen von Tragetaschen
|
|
CA893337A
(en)
*
|
1969-11-10 |
1972-02-15 |
Ibm Canada Limited - Ibm Canada Limitee |
Data communication system
|
|
US3706853A
(en)
*
|
1970-02-27 |
1972-12-19 |
Nippon Electric Co |
Time division communication apparatus
|
|
US3647976A
(en)
*
|
1970-03-09 |
1972-03-07 |
Minnesota Mining & Mfg |
Time-sharing subscriber communications system
|
|
US3632881A
(en)
*
|
1970-03-16 |
1972-01-04 |
Ibm |
Data communications method and system
|
|
US3662114A
(en)
*
|
1970-05-13 |
1972-05-09 |
Itt |
Frame synchronization system
|
|
US3681759A
(en)
*
|
1970-08-06 |
1972-08-01 |
Collins Radio Co |
Data loop synchronizing apparatus
|
|
US3731002A
(en)
*
|
1970-10-08 |
1973-05-01 |
Bell Telephone Labor Inc |
Interconnected loop data block transmission system
|
|
USRE28811E
(en)
*
|
1970-10-08 |
1976-05-11 |
Bell Telephone Laboratories, Incorporated |
Interconnected loop data block transmission system
|
|
US3922493A
(en)
*
|
1971-02-01 |
1975-11-25 |
Gen Electric |
Communication system using time-division multiplexing and pulse-code modulation
|
|
US3748647A
(en)
*
|
1971-06-30 |
1973-07-24 |
Ibm |
Toroidal interconnection system
|
|
FR2165182A5
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1971-12-21 |
1973-08-03 |
Trt Telecom Radio Electr |
|
|
US3755786A
(en)
*
|
1972-04-27 |
1973-08-28 |
Ibm |
Serial loop data transmission system
|
|
US3814839A
(en)
*
|
1972-05-08 |
1974-06-04 |
Telecommunications Technology |
Remote digital switching technique for use on communications circuits
|
|
US3790715A
(en)
*
|
1972-07-28 |
1974-02-05 |
Bell Telephone Labor Inc |
Digital transmission terminal for voice and low speed data
|
|
US3772475A
(en)
*
|
1972-08-28 |
1973-11-13 |
Communications Satellite Corp |
Satellite communications system with super frame format and frame segmented signalling
|
|
US3755789A
(en)
*
|
1972-10-30 |
1973-08-28 |
Collins Radio Co |
Expandable computer processor and communication system
|
|
DE2253101C3
(de)
*
|
1972-10-30 |
1979-09-13 |
Battelle-Institut E.V., 6000 Frankfurt |
Wechsel- oder Gegensprechanlage mit elektronischem Verbindungsaufbau
|
|
US3811014A
(en)
*
|
1973-03-12 |
1974-05-14 |
Logicon Inc |
Adaptive pulse code modulation system
|
|
DE2324854B2
(de)
*
|
1973-05-17 |
1981-04-23 |
Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt |
Verfahren zur gerichteten Nachrichtenübertragung in einem vielfach verzweigten Netz
|
|
US3924077A
(en)
*
|
1973-07-05 |
1975-12-02 |
Thomas R Blakeslee |
Pulse code modulation time division multiplex telephone system
|
|
US3876838A
(en)
*
|
1973-10-26 |
1975-04-08 |
Vidar Corp |
Carrier concentrator system and method
|
|
US3984642A
(en)
*
|
1974-06-10 |
1976-10-05 |
The Post Office |
Digital telephone and switching system employing time division multiplex pulse code modulation
|
|
US4071711A
(en)
*
|
1974-08-02 |
1978-01-31 |
Farinon Electric Of Canada Ltd. |
Telephone subscriber distribution system
|
|
DE2438199C3
(de)
*
|
1974-08-08 |
1979-11-15 |
Siemens Ag, 1000 Berlin Und 8000 Muenchen |
Verfahren zum Betrieb eines digitalen Zeitmultiplex-Fernmeldenetzes
|
|
US3963869A
(en)
*
|
1974-12-02 |
1976-06-15 |
Bell Telephone Laboratories, Incorporated |
Parity framing of pulse systems
|
|
GB1538996A
(en)
*
|
1976-03-10 |
1979-01-24 |
Chestel Inc |
Communication switching system
|
|
US4046964A
(en)
*
|
1976-06-24 |
1977-09-06 |
Bell Telephone Laboratories, Incorporated |
Testing of digital systems
|
|
US4154983A
(en)
*
|
1978-03-13 |
1979-05-15 |
Bell Telephone Laboratories, Incorporated |
Loop carrier system for telecommunication and data services
|
|
US4163123A
(en)
*
|
1978-06-19 |
1979-07-31 |
Becker William D |
Electronic tour guide system
|
|
DE2946875A1
(de)
*
|
1979-05-17 |
1981-05-27 |
Georg Dipl.-Ing. 8047 Karlsfeld Figol |
Drahtloses intercomsystem
|
|
US4494229A
(en)
*
|
1979-07-02 |
1985-01-15 |
Rolm Corporation |
Interconnecting apparatus for a distributed switching telephone system
|
|
US4445213A
(en)
*
|
1979-07-31 |
1984-04-24 |
Bell Telephone Laboratories, Incorporated |
Communication line interface for controlling data information having differing transmission characteristics
|
|
US4354264A
(en)
*
|
1980-06-16 |
1982-10-12 |
International Standard Electric Corporation |
Digital ring control system for digital multiplexer
|
|
GB2177873B
(en)
*
|
1985-07-19 |
1989-11-22 |
Marconi Electronic Devices |
Communications system
|
|
CN113244644B
(zh)
*
|
2021-05-13 |
2022-07-19 |
安徽科技学院 |
一种中药材浓缩设备
|