| All Patents in class 209/219 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
 | 6,121 | Feb. 20, 1849 | R. Cook | Improvement in Electro-Magnetic Ore-Separators |
| | 567,381 | Sep. 08, 1896 | R. Eickemeyer | Magnetic separator |
| | 567,382 | Sep. 08, 1896 | R. Eickemeyer | Magnetic separator |
| | 2,221,918 | Nov. 19, 1940 | E.A. Hall, K.R. Bohn | Valve Grinding Machine |
| | 2,466,839 | Apr. 12, 1949 | H.J. Caldwell | Magnetic separator |
| | 2,717,080 | Sep. 06, 1955 | A. Anderson | Magnetic separator |
| | 4,199,455 | Apr. 22, 1980 | M.R. Estabrook | Combined magnetic and cyclonic separating apparatus |
