Number | Name | Date | Kind |
---|---|---|---|
3735503 | Dow et al. | May 1973 | |
3947972 | Freeman | Apr 1976 | |
4078316 | Freeman | Mar 1978 | |
4117605 | Kurland et al. | Oct 1978 | |
4170832 | Zimmerman | Oct 1979 | |
4264924 | Freeman | Apr 1981 | |
4264925 | Freeman et al. | Apr 1981 | |
4389681 | Tanaka et al. | Jun 1983 | |
4420656 | Freeman | Dec 1983 | |
4445187 | Best | Apr 1984 | |
4571640 | Baer | Feb 1986 | |
4573072 | Freeman | Feb 1986 | |
4591248 | Freeman | May 1986 | |
4749354 | Kerman | Jun 1988 | |
4753597 | Pash et al. | Jun 1988 | |
4777537 | Ueno et al. | Oct 1988 | |
4847699 | Freeman | Jul 1989 | |
5166804 | Takahashi | Nov 1992 | |
5213510 | Freeman | May 1993 | |
5340317 | Freeman | Aug 1994 |
Entry |
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Usami, Shozo, "Parallel Random Access System: A New Method to Improve Foreign Language Training", Educational Technology, Feb. 1979, pp. 33-35. |