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| All Patents in class 15/206 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,994X | May 24, 1830 | H. Aiken | Cloth Brush | brushes or brooms | |
| 1,174,488 | Mar. 07, 1916 | O. Geiger, R. Radinse | Brush | grinding wheels | |
| 1,770,935 | Jul. 22, 1930 | E. Lochman | Eraser-cleaning machine | ||
| 2,763,104 | Sep. 18, 1956 | E.R. Lindenborg | Flexible abrasive brush | sanding machines | |