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| Patents for Charles M. Stratton | |||||
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| Number | Date | Patentee | Title | Type | |
| 100,463 | Mar. 01, 1870 | C.M. Stratton, E.A. Stratton | Improvement in Spirit Level | wooden levels | |
| 129,183 | Jul. 16, 1872 | E.A. Stratton, C.M. Stratton | Improvement in adjustable spirit-levels | levels | |
| 370,826 | Oct. 04, 1887 | C.M. Stratton, E.A. Stratton | Spirit Level Stock | wooden levels | |
| 383,196 | May 22, 1888 | C.M. Stratton, E.A. Stratton | Spirit Level | levels | |