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| Patents for Francis M. Roots | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 56,614 | Jul. 24, 1866 | P.H. Roots, F.M. Roots | Improvement in cross-heads for blowers | |
![]() | 108,941 | Nov. 01, 1870 | P.H. Roots, F.M. Roots | Portable Forge | |
![]() | 349,360 | Sep. 21, 1886 | F.M. Roots | Portable Forge | |