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| Patents for J. P. Theo. Lang | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 260,424 | Jul. 04, 1882 | D. Shortsleeve | Machine for Ornamenting Stone | |
![]() | 283,929 | Aug. 28, 1883 | D. Shortsleeve | Machine for Sawing Stone | |