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| Patents for Robert Walker | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,871X | Mar. 10, 1830 | R. Walker | Shovel cutter plough | plows | |
| 7,009 | Jan. 08, 1850 | R. Walker, A. Welch | Machinery for dressing shingles | shingle machines | |
| CA-877 | Mar. 16, 1871 | R. Walker | Improvements on drilling and boring machines | drill presses | |