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| Patents for John Mainland | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,614,964 | Jan. 18, 1927 | C. Nyberg, J. Mainland | Feeding Device for Thrashing Machines | threshers and thrashers | |
| 1,713,291 | May 14, 1929 | J. Mainland | Harvester Thrasher | harvesters | |
| 1,799,306 | Apr. 07, 1931 | J. Mainland | Combine | cotton harvesters | |