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| Patents for Roberts & Pierce | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 9,957 | Aug. 23, 1853 | M. Roberts | Lathe attachment | |
 | 12,115 | Dec. 19, 1854 | M. Roberts | Machine for turning prismatic forms | |
 | 14,899 | May 13, 1856 | M. Roberts | Cutter-head for lathes | |