Number | Date | Country | Kind |
---|---|---|---|
58-35525 | Mar 1983 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4228476 | Okita et al. | Oct 1980 |
Number | Date | Country |
---|---|---|
56-42216 | Oct 1981 | JPX |
57-9292 | Feb 1982 | JPX |
Entry |
---|
Transaction No. 1083 of the Institute of Electrical Engineers of Japan in 1981 Nationwide Convention, entitled "Current Differential Protective Relaying System Utilizing Optical PCM Transmission". |