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| Patents for William Carr | |||||
| Number | Date | Patentee | Title | Type | |
| 790,479 | May 23, 1905 | W. Carr, J. Carr | Boring-tool holder | lathe tool holders and tool posts | |
| 939,976 | Nov. 16, 1909 | W. Carr, J. Carr | Lathe-tool holder | lathe tool holders and tool posts | |