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| Patents for David Cumming Jr. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 63,707 | Apr. 09, 1867 | D. Cumming, Jr. | Improvement in cutter-heads for wood-molding machines | |
 | 132,058 | Oct. 08, 1872 | D. Cumming, Jr. | Improvement in Attachment for Wrenches | |