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| All Patents in class 192/224 | |||||
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| Number | Date | Patentee | Title | Type | |
| 136,253 | Feb. 25, 1873 | J.M. Long | Power Hammers | drop hammers | |
| 799,641 | Sep. 19, 1905 | W.R. Fox | Grinding-machine | cutter grinding | |
| 862,075 | Jul. 30, 1907 | E. Henrikson | Speed-Box and Brake-Operating Mechanism | metalworking machine mechanisms | |
| 2,481,153 | Sep. 06, 1949 | E.J. Robichaud | Driving Mechanism for Automatic Bar Stock Machines and the Like | metalworking machines | |