Number | Name | Date | Kind |
---|---|---|---|
3672759 | Bauer | Jun 1972 | |
3679306 | Dubois et al. | Jul 1972 | |
4183657 | Ernst et al. | Jan 1980 | |
4312589 | Brannan et al. | Jan 1982 | |
4372672 | Pries | Feb 1983 | |
4460270 | Watai et al. | Jul 1984 | |
4508446 | Imai | Apr 1985 | |
4512652 | Buck et al. | Apr 1985 | |
4540270 | Imanaka et al. | Sep 1985 | |
4711569 | Nishimori et al. | Dec 1987 | |
4739367 | Watanabe et al. | Apr 1988 | |
4903141 | Morton et al. | Feb 1990 | |
4987444 | Nanri | Jan 1991 |
Number | Date | Country |
---|---|---|
0065660 | Apr 1985 | JPX |
0040864 | Feb 1989 | JPX |
Entry |
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Keillor et al. "Optical Scanner Maintenance . . ." IBM Tech. Discl. Bull. vol. 19 No. 1 Jun. 1976. |