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