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| Patents for J. E. Frantz | |||||
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| Number | Date | Patentee | Title | Type | |
| 483,288 | Sep. 27, 1892 | A.B. Landis | Grinding-machine | grinders | |
| 544,439 | Aug. 13, 1895 | A.B. Landis | Grinding-machine | grinders | |
| 697,854 | Apr. 15, 1902 | A.B. Landis | Automatic work-rest for grinding-machines | ||
| 771,079 | Sep. 27, 1904 | A.B. Landis | Work-rest for grinding-machines | grinders | |
| 785,258 | Mar. 21, 1905 | A.B. Landis | Grinding-machine | grinders | |