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Patents for D. C. Allen & Co. | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 141,744 | Aug. 12, 1873 | D.C. Allen | Molding cutter-head | |
![]() | 151,217 | May 26, 1874 | E.F. Gordon | Improvement in band sawing machines |