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| Patents for Thomas H. Grigg | |||||
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| Number | Date | Patentee | Title | Type | |
| 205,543 | Jul. 02, 1878 | G.G. Stillman, T.H. Grigg | Improvement in Compasses | compasses | |
| 1,054,687 | Mar. 04, 1913 | T.H. Grigg | Wrench | wrench handle components | |