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| All Patents in class 212/71 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,059X | Mar. 10, 1834 | J. Drummond | Hoisting machine | ||
| 9,389X | Feb. 12, 1836 | E. Marsh | Crane | cranes | |
| 424,025 | Mar. 25, 1890 | A.H. Richardson | Machine for sharpening cutting-tools | sharpening machines | |