Number | Date | Country | Kind |
---|---|---|---|
2-164143 | Jun 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4608684 | Upp | Aug 1986 | |
4894821 | Hayano | Jan 1990 | |
4941141 | Hayano | Jul 1990 | |
5123012 | Suzuki et al. | Jun 1992 |
Entry |
---|
Electric Telecommunication Association, "Digital Transmission Terms" Dec., 1988, p. 74. |