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| Patents for Manuel W. Kahle | |||||
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| Number | Date | Patentee | Title | Type | |
| 230,420 | Jul. 27, 1880 | M.W. Kahle | Combined Calipers & Scriber | calipers | |
| 230,421 | Jul. 27, 1880 | M.W. Kahle | Calipers & Centering Device | calipers | |