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| Patents for Robert Blake | |||||
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| Number | Date | Patentee | Title | Type | |
| 80,900 | Aug. 11, 1868 | R. Blake | Improvement in machines for punching axe-polls | tool making machines | |
| 89,623 | May 04, 1869 | R. Blake, A. Carpenter | Improved machine for swaging axe-polls | metal swaging machines | |