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| Patents for William P. Brett | |||||
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| Number | Date | Patentee | Title | Type | |
| 540,630 | Jun. 11, 1895 | W.P. Brett | Drilling Machine | multiple spindle drilling heads | |
| CA-88,827 | Aug. 16, 1904 | A.W. Miller | Door mortiser | mortising machines | |
| 779,955 | Jan. 10, 1905 | A.W. Miller | Door mortiser | mortising machines | |