Number | Date | Country | Kind |
---|---|---|---|
1-339133 | Dec 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4067748 | Rowe | Jan 1978 | |
4083733 | Asano et al. | Apr 1978 | |
4683297 | Yanami et al. | Jul 1987 |
Number | Date | Country |
---|---|---|
0272095 | Jun 1988 | EPX |
Entry |
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Patent Abstracts of Japan vol. 012, No. 186 (C-500) 31 May 1988 abstracting JP-A-62-292-791 (Samnatsu Kogyo KK) 19 Dec. 1987. |