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| All Patents in class 172/152 | |||||
| Number | Date | Patentee | Title | Type | |
| 84,910 | Dec. 15, 1868 | J. Heitzman, J. Schriblein | Improvement in Hand-Cultivators | cultivators and tillers | |
| 1,441,717 | Jan. 09, 1923 | C.H. White | Tool Holder for Cultivators | agricultural tool holders | |