Number | Date | Country | Kind |
---|---|---|---|
57-81261 | May 1982 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3086882 | Smith et al. | Apr 1963 | |
3404661 | Mathias et al. | Oct 1968 | |
3568632 | Cawthon | Mar 1971 | |
3856654 | George | Dec 1974 | |
3915117 | Schertler | Oct 1975 | |
4226208 | Nishida et al. | Oct 1980 |
Number | Date | Country |
---|---|---|
0011160 | May 1980 | EPX |
2420430 | Nov 1974 | DEX |
2165849 | Aug 1973 | FRX |
Entry |
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IBM Tech. Disc. Bull., vol. 11, No. 7, Dec. 1968, pp. 757, 758. |
IBM Tech. Disc. Bull., vol. 18, No. 5, Oct. 1975, pp. 1504, 1505. |