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