Number | Date | Country | Kind |
---|---|---|---|
2846599 | Oct 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3659124 | Lathrop | Apr 1972 | |
3735163 | Dijkstra | May 1973 | |
4150407 | Dijkstra | Apr 1979 |
Number | Date | Country |
---|---|---|
7716251 | Jan 1978 | DEX |
Entry |
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IBM Tech. Disc. Bull., R. W. Lissner et al., Disk File Actuator, vol. 17, No. 10, Mar. 1975, pp. 3016-3018. |
O. E. Olbrich, Positionierer fur Plattenspeicher, Feinwerktechnik and Micronic, No. 4, 77, 1973, pp. 151-157. |