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| All Patents in class 416/241R | |||||
| Number | Date | Patentee | Title | Type | |
| 1,396,762 | Nov. 15, 1921 | G.L. Kraber | Rotor for cutter-heads | handheld power planers | |
| 2,973,188 | Feb. 28, 1961 | R.R. Howe | Mixing Apparatus | ||
| 3,294,315 | Dec. 27, 1966 | D.N. Stewart, R. Olson | Fan construction | ||