Number | Date | Country | Kind |
---|---|---|---|
2816949 | Apr 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4021786 | Peterson | May 1977 | |
4056810 | Hart et al. | Nov 1977 | |
4112511 | Heald | Sep 1978 | |
4137109 | Aiken et al. | Jan 1979 | |
4183037 | Le Can et al. | Jan 1980 |
Number | Date | Country |
---|---|---|
2612666 | Sep 1977 | DEX |
Entry |
---|
Wiedmann, IBM Tech Discl., Bulletin, vol. 21, No. 1, Jun. 1978, pp. 231-232. |