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| Patents for D. J. Crosby | |||||
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| Picture | Number | Date | Patentee | Title | |
| 712,815 | Nov. 04, 1902 | A.B. Landis | Work-rest for grinding-machines | ||
 | 734,897 | Jul. 28, 1903 | A.B. Landis | Automatic grinding-machine | |
 | 771,077 | Sep. 27, 1904 | A.B. Landis | Change-speed gearing | |
 | 1,016,751 | Feb. 06, 1912 | A.B. Landis | Grinding-machine | |