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| Patents for P. Kettenring | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 252,481 | Jan. 17, 1882 | W.H. Lenhart | Lathe for turning eccentric or polygonal forms | |
 | 260,127 | Jun. 27, 1882 | C. Seymour | Proportional balance | |
 | 267,465 | Nov. 14, 1882 | C. Seymour | Mortising-machine | |
 | 426,147 | Apr. 22, 1890 | C. Seymour | Spoke-driver | |