Number | Date | Country | Kind |
---|---|---|---|
92870136 | Aug 1992 | EPX |
Number | Name | Date | Kind |
---|---|---|---|
5212132 | Spitz et al. | May 1993 | |
5212133 | Duranel et al. | May 1993 |
Number | Date | Country |
---|---|---|
3336761 | May 1984 | DEX |
2131033 | Jun 1984 | GBX |
Entry |
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Hawley's Condensed Chemical Dictionary, 11th ed., Van Nostrand Reinhold, New York, 1989, pp. 424, 425, 607. |