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