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| 2797478 | Gebhart et al. | Jul 1957 | A |
| 2841868 | O'Brien | Jul 1958 | A |
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| 4637138 | Piche | Jan 1987 | A |
| D295485 | Ferrin et al. | May 1988 | S |
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| D412427 | Prissberg | Aug 1999 | S |
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| D427024 | Meyer | Jun 2000 | S |
| D446427 | Meyer | Aug 2001 | S |
| D446690 | Meyer | Aug 2001 | S |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 11192263 | Jul 2005 | US |
| Child | 29257857 | US |