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| Patents for Otto Osten | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 128,243 | Jun. 25, 1872 | O. Osten | Improvement in machines for sawing staves | |
 | 132,734 | Nov. 05, 1872 | O. Osten | Improvement in machines for crozing and chamfering staves | |
 | 159,114 | Jan. 26, 1875 | O. Osten | Improvement in machines for cutting heads for barrels | |