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| Patents for Robert B. Craig | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,029,172 | Jun. 11, 1912 | R.B. Craig | Machine Tool Holder | ||
| 1,061,822 | May 13, 1913 | R.B. Craig | Multiple Machine Tool Holder | ||
| 1,285,627 | Nov. 26, 1918 | A.L. Coffman, R.B. Craig | Tool Holder | ||