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| Patents for Hazen P. Huntoon | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 142,143 | Aug. 26, 1873 | J.R. Brown | Pipe-Tongs | |
 | 144,253 | Nov. 04, 1873 | J.R. Brown | Pipe-Tongs | |
 | GB-187,303,762 | Nov. 19, 1873 | J.R. Brown | Adjustable Pipe Tongs | |
 | CA-2,923 | Dec. 19, 1873 | J.R. Brown | Pipe Tongs | |
 | 145,929 | Dec. 30, 1873 | J.R. Brown | Pipe-Tongs | |
 | 148,300 | Mar. 10, 1874 | H.P. Huntoon | Pipe-Tongs | |
 | 230,634 | Aug. 03, 1880 | H.P. Huntoon | Pipe Tongs | |