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| Patents for Andrew J. Graf | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,147,891 | Feb. 21, 1939 | C.L. Schulte, A.J. Graf | Tomatic Infeed Centerless Grinder | ||
| 2,254,020 | Aug. 26, 1941 | A.J. Graf, C.L. Schulte | Cambering Mechanism for Grinding Machines | ||
| 2,257,464 | Sep. 30, 1941 | A.J. Graf | Radius Truing Attachment | ||
| 2,282,048 | May 05, 1942 | A.J. Graf | Headstock for Machine Tools | ||
| 2,294,265 | Aug. 25, 1942 | A.J. Graf, R.D. Wortendyke | Automatic Infeeding Mechanism for Grinding Machines | ||