Number | Date | Country | Kind |
---|---|---|---|
44 03 670.1 | Feb 1994 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4909835 | Tobler | Mar 1990 | |
5169988 | Tobler | Dec 1992 | |
5245041 | Reissenweber et al. | Sep 1993 |
Number | Date | Country |
---|---|---|
2055886 | May 1992 | CAX |
487454 | May 1992 | EPX |
9316062 | Aug 1993 | WOX |
Entry |
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English Abstract of JP-3052862A, Jul. 20, 1989, Nippon Soda KK. |
English Abstract of JP-3120202A, Oct. 3, 1989, Sandoz AG. |