ANALOG AUTOMATIC TELEPHONE EXCHANGE
LARICHEV NIKOLAJ I,SU, MATVEEV MIKHAIL M,SU, KUCHERYAVYJ ANDREJ E,SU, MOVSHOVICH IOSIF E,SU, SINYAKOV ANDREJ R,SU, EMDIN MIKHAIL YA,SU
Year of Publication 23.12.1991
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Year of Publication 23.12.1991
Patent