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| All Patents in class 175/413 | |||||
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| Number | Date | Patentee | Title | Type | |
| 49,034 | Jul. 25, 1865 | C.W. Johnson | Improvement in rock-drills | ||
| 2,998,333 | Aug. 29, 1961 | E.J. Kielma, A.H. Fotsch | Machine Tool for Removing Material from a Container | milling machines | |