Number | Name | Date | Kind |
---|---|---|---|
4933979 | Suzuki et al. | Jun 1990 | |
5014331 | Kurogane et al. | May 1991 | |
5038383 | Usumoto et al. | Aug 1991 | |
5058189 | Kanno | Oct 1991 | |
5140650 | Casey et al. | Aug 1992 | |
5159187 | Okisu et al. | Oct 1992 |
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Strong, H. R., "Method For Mask Generation Suitable For Use In Scanning Preselected Areas of Standard Documents", IBM Tech Discl. Bulletin vol. 20, No. 1, Jun. 1977. |
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