Number | Date | Country | Kind |
---|---|---|---|
2-232805 | Sep 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4517660 | Fushimoto et al. | May 1985 | |
4703160 | Narishima et al. | Oct 1987 | |
4842531 | Takemura | Jun 1989 | |
4847798 | Kurashima | Jul 1989 | |
4939514 | Miyazaki | Jul 1990 | |
4939792 | Urbish et al. | Jul 1990 | |
4961126 | Suzuki | Oct 1990 | |
4996522 | Sunano | Feb 1991 | |
5039846 | Komaki | Aug 1991 |
Number | Date | Country |
---|---|---|
59-70238 | May 1984 | JPX |
61-192356 | Nov 1986 | JPX |
62-125961 | Aug 1987 | JPX |
2-58848 | Apr 1990 | JPX |
Entry |
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"Mechanical Design of the HP-18C and HP-28C Handheld Calculators", Layman et al., Hewlett-Packard Journal, vol. 38, No. 8, Aug. 1987, pp. 17-20. |
"A Multichip Hybrid Printer Circuit Board for Advanced Handheld Calculators", Hauge et al., Hewlett-Packard Journal, vol. 38, No. 8, Aug. 1987, pp. 25-30. |
"Electronic Design of an Advanced Technical Handheld Calculator", Brown et al., Hewlett-Packard Journal, vol. 38, No. 8, Aug. 1987, pp. 34-39. |