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