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| Patents for Charles Leon Libby | |||||
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| Picture | Number | Date | Patentee | Title | |
| 406,413 | Jul. 02, 1889 | C.L. Libby | Turret Lathe | ||
| 442,230 | Dec. 09, 1890 | C.L. Libby | Chuck for Screw Machines | ||
| 443,775 | Dec. 30, 1890 | C.L. Libby | Attachment for Turret Lathes | ||
| 455,344 | Jul. 07, 1891 | C.L. Libby | Lathe Head | ||
 | 511,736 | Dec. 26, 1893 | C.L. Libby | Taper Attachment and Feed Mechanism for Vertical Boring Mill | |
 | 514,719 | Feb. 13, 1894 | C.L. Libby | Boring-Mill | |