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| 9770618 | Wall | Sep 2017 | B2 |
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| 20170100622 | Wall | Apr 2017 | A1 |
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| 20180236298 | Donnelly | Aug 2018 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 29581845 | Oct 2016 | US |
| Child | 29636351 | US |