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| All Patents in class 15/22.2 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 763,605 | Jun. 28, 1904 | D. Hepp | Tool-holder | |
 | 1,200,621 | Oct. 10, 1916 | G.T. Johnson | Rubbing-machine | |
| 1,700,114 | Jan. 22, 1929 | C.H. Thompson | Surface Polishing Machine | ||
| 1,700,115 | Jan. 22, 1929 | C.H. Thompson | Polishing Machine | ||
| 1,761,059 | Jun. 03, 1930 | C.E. Van Norman, B.F. Stowell | Polishing machine | ||
 | 2,113,694 | Apr. 12, 1938 | O.A. Kehle | Rubbing machine | |