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| Patents for Charles A. Paul | |||||
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| Number | Date | Patentee | Title | Type | |
| 198,909 | Jan. 01, 1878 | T. Bedworth, F.T. Ward | Improvement in Spirit Levels | levels | |
| 586,712 | Jul. 20, 1897 | C.A. Paul | Cast Abutments for Securing Plane Cutters | plane cutter adjustments | |