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Patents for Q. S. Backus | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 35,715 | Jun. 24, 1862 | J.A. Thayer | Combination Tool | |
![]() | 82,583 | Sep. 29, 1868 | Q.S. Backus | Improved chuck-drill | |
![]() | 91,068 | Jun. 08, 1869 | Q.S. Backus | Improved vise |