Number | Date | Country | Kind |
---|---|---|---|
1-77561 | Mar 1989 | JPX | |
1-266485 | Oct 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4580211 | Doki et al. | Apr 1986 | |
4660130 | Bartley et al. | Apr 1987 |
Number | Date | Country |
---|---|---|
165382 | Dec 1985 | EPX |
Entry |
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IBM Technical Disclosure Bulletin, vol. 21, No. 9, Feb. 1989, New York, US pp. 3798-3800, Gibbard, Walker "Efficient Storage Space Utilization". |