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| Patents for William W. Doolittle | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 489,224 | Jan. 03, 1893 | W.W. Doolittle | Tapping-machine | |
 | 580,039 | Apr. 06, 1897 | W.W. Doolittle | Planing-machine | |
 | 584,495 | Jun. 15, 1897 | W.W. Doolittle | Planing-machine mechanism | |
| 785,351 | Mar. 21, 1905 | W.W. Doolittle | Tool Holder | ||