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| Patents for Alenza T. Gifford | |||||
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| Number | Date | Patentee | Title | Type | |
| 330,391 | Nov. 17, 1885 | A.T. Gifford | Milling-machine | milling machines | |
| 432,936 | Jul. 22, 1890 | A.T. Gifford | Milling-machine | milling machines | |
| 458,325 | Aug. 25, 1891 | A.T. Gifford | Milling-machine | milling machines | |