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| Patents for Fred S. Greenleaf | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 417,829 | Dec. 24, 1889 | J.B. Lowell | Wrench | |
| 543,647 | Jul. 30, 1895 | C.H. Benjamin, C.W. Glidden | Grinding Machine | ||
 | 952,223 | Mar. 15, 1910 | B.W. Woodward | Wrench | |
 | D42,343 | Mar. 19, 1912 | J.H. Vinton | Housing For Wrenches | |