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| Patents for C. D. Brewer | |||||
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| Number | Date | Patentee | Title | Type | |
| 105,244 | Jul. 12, 1870 | H.J. Perkins | Improvement in machine for sharpening the teeth of saws | saw sharpening machines | |
| 141,939 | Aug. 19, 1873 | V. Luppert, P. St. Pierre | Improvement in saws | sawblades | |
| 152,393 | Jun. 23, 1874 | W.F. Brenizer, P. McBride | Improvement in sandpapering-machines | sanding machines | |