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| Patents for John C. Drader | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,961,925 | Jun. 05, 1934 | W.F. Dalzen, J.C. Drader | Testing Device | gear measuring machines | |
| 2,085,850 | Jul. 06, 1937 | W.H. Bock, J.C. Drader | Gear Speeder | gear measuring machines | |
| 2,344,292 | Mar. 14, 1944 | J.C. Drader | Method of Finishing Gears | gear making machines | |