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| Patents for Frederic Kettler | |||||
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| Number | Date | Patentee | Title | Type | |
| 20,494 | Jun. 08, 1858 | F. Kettler | Machine for cutting out stumps | specialty woodworking machines | |
| 32,193 | Apr. 30, 1861 | F. Kettler | Stump-extractor | specialty woodworking machines | |