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| All Patents of Type: metal thread milling machines | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,200,046 | Oct. 03, 1916 | A.M. Thompson | Screw-Thread-Milling Machine | metal thread milling machines | |
| 1,279,041 | Sep. 17, 1918 | A.M. Thomson | Turning and Thread-Milling Machine | metal thread milling machines | |