Number | Date | Country | Kind |
---|---|---|---|
3-158983 | Jun 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4041533 | Yamamoto et al. | Aug 1977 | |
4737670 | Chan | Apr 1988 | |
5144174 | Murakami | Sep 1992 | |
5196736 | Doornhein et al. | Mar 1993 |
Number | Date | Country |
---|---|---|
0239696 | Oct 1987 | EPX |
Entry |
---|
Patent Abstracts of Japan vol. 12, No. 293 (E-645) Aug. 10, 1988 & JP-A-63 069 314 (Sony) Mar. 29, 1988 * abstract*. |