| Number | Date | Country | Kind |
|---|---|---|---|
| 3-310511 | Nov 1991 | JPX | |
| 4-155220 | Jun 1992 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 4052798 | Tomita et al. | Oct 1977 | |
| 4589786 | Fukui | May 1986 | |
| 4675568 | Uchikawa et al. | Jun 1987 | |
| 4949187 | Cohen | Aug 1990 | |
| 5131311 | Murakani et al. | Jun 1992 | |
| 5233438 | Funahashi et al. | Aug 1993 |
| Number | Date | Country |
|---|---|---|
| 0409224 | Jan 1991 | EPX |
| 2249999 | May 1992 | GBX |
| Entry |
|---|
| Patent Abstarct of Japan vol. 9, No. 245 (M-418) Oct. 2, 1985, & JP-A-60 097 864 (Matsushita) May 31, 1985. |
| Patent Abstract of Japan vol. 10, No. 381 (M-547)(2438) Dec. 19, 1986. & JP-A-61 172 750 (Fuji) Aug. 4, 1986. |
| Communication dated Aug. 6, 1993; European Search report Application No. 92 30 8560 dated Jul. 23, 1993. |
| U.S. Patent Application No. 07/663,672 filed Mar. 4, 1991. |