Inventor
SHIMOZONO RYOJI
JP5 patents
Patents
5 patentsUS4599583AJul 8, 1986
Mixed dual frequency generating system
FUJITSU LTD41 citations92
US4766594AAug 23, 1988
Digital network system having arrangement for testing digital subscriber line
FUJITSU LTD23 citations81
US4812839AMar 14, 1989
System for controlling network activation sequence
FUJITSU LTD12 citations72
US4754273AJun 28, 1988
System for controlling network activation sequence
FUJITSU LTD13 citations72
US5442621AAug 15, 1995
ISDN switching system having testing facilities
FUJITSU LTD13 citations70