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| Patents for Valentin Merklen | |||||
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| Number | Date | Patentee | Title | Type | |
| 245,739 | Aug. 16, 1881 | V. Merklen | Cutter Head for Lathes | lathe tools | |
| 245,740 | Aug. 16, 1881 | V. Merklen | Lathe for tuning spirals | rope and spiral cutting machines | |
| RE10,765 | Sep. 21, 1886 | V. Merklen | Lathe for turning spirals | rope and spiral cutting machines | |
| 390,884 | Oct. 09, 1888 | V. Merklen | Spiral lathe | rope and spiral cutting machines | |