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| Patents for Charles D. Severance | |||||
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| Number | Date | Patentee | Title | Type | |
| 614,070 | Nov. 08, 1898 | L.O. Barret | Mechanic's Gage | marking gauges | |
| 1,045,200 | Nov. 26, 1912 | C.D. Severance | Breast Drill Gearing | breast drills | |
| 1,166,364 | Dec. 28, 1915 | O.D. Hapgood | Tool | push drills | |
| 1,172,793 | Feb. 22, 1916 | O.D. Hapgood | Revolution Counter | measurement gauges | |
| 1,752,112 | Mar. 25, 1930 | R.O. Stetson, C.D. Severance | Spirit level | levels | |