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| All Patents of Type: ditching machines | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,600X | Aug. 05, 1829 | G. Henricks (Heuricks) | Excavating and Ditching Ground for Canals | excavators | |
| 828,208 | Aug. 07, 1906 | J.B. Hill | Ditching-Machine | ditching machines | |
| 865,702 | Sep. 10, 1907 | J.B. Hill | Ditching-Machine | ditching machines | |
| 885,343 | Apr. 21, 1908 | J.B. Hill | Digging-Machine | ditching machines | |
| 941,145 | Nov. 23, 1909 | J.B. Hill | Ditching-Machine | ditching machines | |