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| All Patents in class 418/213 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,056,909 | Oct. 06, 1936 | L.L. Schauer | Hydraulic motor unit | drill presses | |
| 2,056,910 | Oct. 06, 1936 | L.L. Schauer | Hydraulic motor unit | metalworking machine mechanisms | |