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All Patents in class 476/14 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 152,171 | Jun. 16, 1874 | A. Rodgers | Improvement in saw-mills | |
![]() | 1,229,401 | Jun. 12, 1917 | S.D. Black, A.G. Decker | Drill gearing |