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| Patents for William H. Robertson | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,307 | Oct. 05, 1852 | W.H. Robertson | Milling Machine | milling machines | |
| 11,754 | Oct. 03, 1854 | W.H. Robertson | Machine for Dressing Stone | stone dressing machines | |
| 227,583 | May 11, 1880 | W.H. Robertson | Starching Machine | ||