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| Number | Date | Country |
|---|---|---|
| 0279405 | Feb 1988 | EPX |
| 678914 | Jul 1939 | DEX |
| 3605063 | Jan 1987 | DEX |
| 6366439 | Nov 1989 | JPX |
| 9105058 | Mar 1992 | WOX |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 14696 | Oct 1993 |