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| Patents for Trask Milling Machine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 422,663 | Mar. 04, 1890 | C.H. Trask | Milling-machine | milling machines | |
| 521,771 | Jun. 19, 1894 | C.H. Trask | Milling-machine | milling machines | |