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| All Patents in class 219/233 | |||||
| Number | Date | Patentee | Title | Type | |
| 127,270 | May 28, 1872 | G. Robinson | Improvement in electrical wood-dividers | sawblades | |
| 2,095,893 | Oct. 12, 1937 | J.G. Shively | Soldering iron | soldering irons | |
| 2,405,866 | Aug. 13, 1946 | C.E. Weller | Electrical heating apparatus | soldering irons | |