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| Patents for Hubert C. Hart | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 70,937 | Nov. 19, 1867 | M.C. Ames | Improvement in Joiners' Gauges | |
 | 144,092 | Oct. 28, 1873 | H.C. Hart | Improvement in saw sets | |
 | 149,306 | Apr. 07, 1874 | H.C. Hart | Bit-stock | |
 | 167,897 | Sep. 21, 1875 | H.C. Hart | Improvement in ratchet-braces for metal drills | |
 | 204,727 | Jun. 11, 1878 | H.C. Hart | Improvement in bit-stocks | |
 | 272,685 | Feb. 20, 1883 | H.C. Hart | Belt-fastener | |
 | 609,146 | Aug. 16, 1898 | H.C. Hart | Wrench | |