Number | Date | Country | Kind |
---|---|---|---|
2-287828 | Oct 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4533952 | Norman, III | Aug 1985 | |
4620228 | Mikado | Oct 1986 | |
4965844 | Oka et al. | Oct 1990 | |
5043713 | Katsura et al. | Aug 1991 |
Number | Date | Country |
---|---|---|
WO8606233 | Oct 1986 | WOX |
2113059 | Jul 1983 | GBX |
Entry |
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Patent Abstracts of Japan vol. 8, No. 76 (P-266) 7 Apr. 1984 & JP-A-58 219 664 (Sony Corp) 21 Dec. 1983. |