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| Patents for Albert Collet | |||||
| Number | Date | Patentee | Title | Type | |
| 586,419 | Jul. 13, 1897 | A. Collet | Tap for Cutting Wood Threads | drill bits | |
| 590,089 | Sep. 14, 1897 | A. Collet | Tool for Trimming off Treenails | ||