CIRCUIT ARRANGEMENT FOR DC SIGNAL TRANSMISSION, MAINLY TO THE LINE CIRCUITS INTERCONNECTING EXCHANGES
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English |
Published |
28.04.1986
|
Edition | 4 |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Bibliography: | Application Number: HU19840000329 |
---|