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| Patents for Calvin J. Holman | |||||
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| Number | Date | Patentee | Title | Type | |
| 40,837 | Dec. 08, 1863 | C.J. Holman | Improved sawing-machine | barrel making machines | |
| 51,896 | Jan. 02, 1866 | C.J. Holman | Improvement in machines for sawing staves | barrel making machines | |
| RE2,471 | Jan. 29, 1867 | C.J. Holman | Improvement in sawing machines | cooper | |
| 72,639 | Dec. 24, 1867 | C.J. Holman | Improvement in machines for sawing barrel-heading | barrel making machines | |