John O. Butler
2 FDA 510(k) clearances · Manufacturer
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| Record | Firm | Date |
|---|---|---|
| BUTLER G.U.M. ANTIBACTERIAL TOOTHBRUSH (K950993) | John O. Butler | 1995-06-02 |
| PROTECT DROPS/SAME AS K874070 (K874194) | John O. Butler | 1987-12-16 |
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