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| Patents for Christian Winkler | |||||
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| Number | Date | Patentee | Title | Type | |
| 994,965 | Jun. 13, 1911 | C. Winkler | Planer Head | metal planers | |
| 1,009,005 | Nov. 14, 1911 | C. Winkler | Duplex Tool Support | metal planers | |
| 1,420,600 | Jun. 20, 1922 | C. Winkler | Key Seating Machine | key seating machines | |