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| Patents for H. P. Fairfield | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 18,212 | Sep. 15, 1857 | P. Putnam, J.E. Crane | Tenoning-machine | |
| 543,647 | Jul. 30, 1895 | C.H. Benjamin, C.W. Glidden | Grinding Machine | ||