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| Patents for Harry S. Bartholomew | |||||
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| Number | Date | Patentee | Title | Type | |
| 65,046 | May 28, 1867 | H.S. Bartholomew | Improvement in braces for boring-bits | brace chucks | |
| 103,281 | May 24, 1870 | H.S. Bartholomew | Bit-stock | brace chucks | |