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| Patents for Ludwig Barthelmes | |||||
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| Number | Date | Patentee | Title | Type | |
| 239,698 | Apr. 05, 1881 | L. Barthelmes | Reaming-saw | sawblades | |
| 242,249 | May 31, 1881 | L. Barthelmes | Wood-bending machine | wood bending machines | |