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| Patents for George Dryden | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 79,640 | Jul. 07, 1868 | G. Dryden | Improvement in machines for boring wood | |
 | 89,207 | Apr. 20, 1869 | G. Dryden | Improvement in wood-working machines | |
| 159,164 | Jan. 26, 1875 | G. Dryden | Improvement in boring-machines | ||