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| Patents for Frederick J. Colvin | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 268,460 | Dec. 05, 1882 | F.J. Colvin | Brace head for bits and braces | |
 | 279,917 | Jun. 26, 1883 | F.J. Colvin | Screw-Driver | |
 | 518,938 | May 01, 1894 | F.J. Colvin | Articulating chuck with snap-in jaws | |