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| Patents for Robert H. Grant | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,106,803 | Aug. 11, 1914 | R.H. Grant | Grinding-machine | ||
 | 1,122,910 | Dec. 29, 1914 | R.H. Grant | Multiple-drilling machine | |
 | 1,146,374 | Jul. 13, 1915 | A.C. Veith | Automatic lathe | |