Number | Date | Country | Kind |
---|---|---|---|
1-325395 | Dec 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4543592 | Itsumi et al. | Sep 1985 | |
4598460 | Owens et al. | Jul 1990 | |
4935378 | Mori | Jun 1990 | |
5023680 | Gill et al. | Jun 1991 |
Number | Date | Country |
---|---|---|
0236676 | Sep 1987 | EPX |
0258141 | Mar 1988 | EPX |
Entry |
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Patent Abstracts of Japan, vol. 13, No. 97 (E-723)7 Mar. 1989 & JP-A-63 271 971 (Matsushita). |