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| Patents for William Henry Craine Harrison | |||||
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| Number | Date | Patentee | Title | Type | |
| 637,735 | Nov. 21, 1899 | W.H. Harrison | Tool holder: multiple bits on brace arm | ||
| 650,718 | May 29, 1900 | W.H. Harrison | Tool holder: multiple bits held on lower arm of brace | ||