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| Patents for Spencer C. Cary | |||||
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| Number | Date | Patentee | Title | Type | |
| 130,016 | Jul. 30, 1872 | W.E. Cass | Improvement in Metal Shaping Machines | metal lathe accessories and attachments | |
| 644,591 | Mar. 06, 1900 | W.P. Freeman | Electric drill, &c. | drill presses | |