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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 | |
| RE8,115 | Mar. 12, 1878 | H.S. Bartholomew | Improvement in Bit-Stocks | brace chucks | |
| 405,522 | Jun. 18, 1889 | H.S. Bartholomew | Bit-holder | ||