Number | Date | Country | Kind |
---|---|---|---|
5-026932 | Feb 1993 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4841501 | Izuka | Jun 1985 | |
4877666 | Muchnik | Oct 1985 |
Number | Date | Country |
---|---|---|
0338913 | Oct 1989 | EPX |
Entry |
---|
Patent Abstracts of Japan, Kokai No. 2-122443, vol. 14, No. 345, Jul. 1990. |
Patent Abstracts of Japan, Kokai No. 3-86946, vol. 15, No. 266, Jul. 1991. |