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| Number | Date | Country |
|---|---|---|
| 0329968 | Aug 1989 | EPX |
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| 3219579 | Dec 1982 | DEX |
| 3122353 | Jan 1983 | DEX |
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| Number | Date | Country | |
|---|---|---|---|
| Parent | 097268 | Jul 1993 | |
| Parent | 972597 | Nov 1992 |