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Patents for J. F. Barker | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 249,121 | Nov. 01, 1881 | J.C. Tunnicliff | Cutter-head for rounding fellies | |
![]() | 254,732 | Mar. 07, 1882 | J.C. Tunnicliff | Cutter-head for wood-working machines |