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| Patents for Henry Koch | |||||
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| Number | Date | Patentee | Title | Type | |
| 825,911 | Jul. 17, 1906 | H. Koch | Test Indicator | test indicators | |
| 1,100,667 | Jun. 16, 1914 | H. Koch, H. Bebie | Milling-cutter for woodwork | cutters | |