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| Patents for Charles E. Riecker | |||||
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| Number | Date | Patentee | Title | Type | |
| 588,294 | Aug. 17, 1897 | C.E. Riecker | Rule-Joint | folding rule joints | |
| 707,356 | Aug. 19, 1902 | H.S. Walter, C.E. Riecker | Plane Lift | plane accessories | |