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| Patents for Irenas J. Palmer | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 461,367 | Oct. 13, 1891 | I.J. Palmer | Compasses for Laying out Stair-Curves | |
 | 486,940 | Nov. 29, 1892 | I.J. Palmer | Stair-Curve | |