Number | Date | Country | Kind |
---|---|---|---|
3-190143 | Jul 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4771347 | Horimai et al. | Sep 1988 | |
5164926 | Matsumoto | Nov 1992 | |
5224068 | Miyake et al. | Jul 1993 | |
5241520 | Ohta et al. | Aug 1993 | |
5263015 | Nihara et al. | Nov 1993 | |
5270994 | Nakayama et al. | Dec 1993 | |
5278810 | Takahaski et al. | Jan 1994 | |
5283770 | Nakao et al. | Feb 1994 |
Number | Date | Country |
---|---|---|
0257530 | Mar 1988 | EPX |
0351249 | Jan 1990 | EPX |
0435425 | Jul 1991 | EPX |
63-268103 | Apr 1988 | JPX |
63-52354 | May 1988 | JPX |
Entry |
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Patent Abstracts of Japan, vol. 13, No. 239, Nippon Teleger & Teleph Corp., Feb. 16, 1989. |