Number | Date | Country | Kind |
---|---|---|---|
67280 A/79 | Feb 1979 | ITX |
Number | Name | Date | Kind |
---|---|---|---|
3630336 | Johnson et al. | Dec 1971 | |
3868673 | Mau, Jr. et al. | Feb 1975 | |
3893558 | Fulton et al. | Jul 1975 | |
4204206 | Bakula et al. | May 1980 |
Number | Date | Country |
---|---|---|
2621146 | Nov 1977 | DEX |
Entry |
---|
IBM Tech. Disc. Bulletin, by J. S. Coehen et al., vol. 19, No. 8, Jan. 1977, p. 2821. |