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| Patents for M. G. Howe | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 10,602 | Mar. 07, 1854 | L.B. Tyng | Tail Stock for Turning Lathes | |
 | 11,774 | Oct. 10, 1854 | J.A. Bradshaw | Shingle-machine | |
 | 18,509 | Oct. 27, 1857 | G.F. Butterfield, D. Lovejoy | Grinding and polishing metal | |