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| Patents for George H. Southwick | |||||
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| Number | Date | Patentee | Title | Type | |
| 108,310 | Oct. 11, 1870 | J. Wheelock | Improvement in Boring Apparatus | portable metal boring and drilling machines | |
| 129,876 | Jul. 23, 1872 | J. Wheelock | Improvement in Milling Machines | milling machines | |
| 144,583 | Nov. 11, 1873 | J. Wheelock | Improvement in Tool-Holders and Cutter-Heads for Boring-Bars | portable metal boring and drilling machines | |