Number | Date | Country | Kind |
---|---|---|---|
93 13589 | Nov 1993 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3610906 | Stampler | Oct 1971 | |
4817028 | Masson | Mar 1989 |
Entry |
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IBM Technical Disclosure Bulletin, vol. 34, No. 7B, Dec. 1991 New York, US, pp. 339-340, "Unit To Square A Number In Reduced Time And Area". |