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| Patents for D. H. Ball | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 86,271 | Jan. 26, 1869 | D.H. Ball | Improvement in circular-saw mills | |
 | 97,151 | Nov. 23, 1869 | D.H. Ball | Improvement in machine for sawing shingle-bolts | |