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| Patents for Isaiah Walker | |||||
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| Number | Date | Patentee | Title | Type | |
| 20,631 | Jun. 22, 1858 | D.M. Cook | Evaporating Pan | sugar cane apparatus | |
| 106,364 | Aug. 16, 1870 | W.H. Heffley | Improvement in machine for turning axle-trees | axle lathes | |
| RE6,615 | Aug. 24, 1875 | W.H. Heffley | Improvement in machines for turning axles | axle lathes | |
| 245,693 | Aug. 16, 1881 | S.B. Allen, E. Allen | Drag-sawing machine | drag saws | |