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| Patents for Roger K. Rosenquist | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,471,673 | Sep. 18, 1984 | R.K. Rosenquist | Sharpening apparatus for circular saw blades | cutter grinding | |
| 6,010,394 | Jan. 04, 2000 | J.H. Dieck, R.K. Rosenquist | Automatic mower reel grinder | ||
| 6,290,581 | Sep. 18, 2001 | J.H. Dieck, R.K. Rosenquist | Automatic mower reel grinder | ||