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| All Patents in class 15/230.1 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,749,709 | Mar. 04, 1930 | H.A. Loveland | Sandpapering machine | ||
 | 1,938,493 | Dec. 05, 1933 | H.L. Myers | Abradant driving head | |
 | 2,124,114 | Jul. 19, 1938 | A.W. L'Hommedieu | Buffing or polishing wheel | |