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| All Patents in class 83/69 | |||||
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| Number | Date | Patentee | Title | Type | |
| 83,513 | Oct. 27, 1868 | H. Law | Improvement in machines for cutting paper | ||
| 1,670,648 | May 22, 1928 | O.S. Beyer | Automatic punching press | punch presses | |
| 2,202,256 | May 28, 1940 | O.M. Jensen, F.T. Wruk, T.W. Whitley | Hydraulic feed for power driven hack saws | power hacksaws | |