Number | Date | Country | Kind |
---|---|---|---|
1-38454 | Feb 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2932630 | Robinson et al. | Apr 1960 | |
4614778 | Kajiura et al. | Sep 1986 | |
4874808 | Minami et al. | Oct 1989 | |
4931520 | Yamanashi et al. | Jun 1990 | |
4992511 | Yamamoto et al. | Feb 1991 |
Entry |
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English translation of Japanese Kokai Pat. No. 60-26024 to Fukazawa et al, published Feb. 8, 1985. |