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| Patents for Solon G. Howe | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 235,244 | Dec. 07, 1880 | S.G. Howe | Mallet | |
 | 276,247 | Apr. 24, 1883 | S.G. Howe | Mallet | |
| 592,007 | Oct. 19, 1897 | S.G. Howe | Shut Off and Pipe Drilling Device | ||