Number | Date | Country | Kind |
---|---|---|---|
83 05360 | Mar 1983 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
4193128 | Brewer | Mar 1980 | |
4300212 | Simko | Nov 1981 |
Number | Date | Country |
---|---|---|
2622307 | Dec 1976 | DEX |
Entry |
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IBM Technical Disclosure Bulletin, vol. 24, No. 5 (Oct. 1981), H. H. Chao,Static Ram with Nonvolatile Backup Memory," pp. 2456-2457. |