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| All Patents in class 384/563 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,818,089 | Aug. 11, 1931 | F.A. Parsons | Milling Machine Transmission | milling machines | |
| 2,192,856 | Mar. 05, 1940 | L.F. Nenninger | Spindle Construction | metalworking machine mechanisms | |
| 3,620,586 | Nov. 16, 1971 | C.R. Maastricht | Preload Spindle Bearing for Machine Tool | metalworking machine bearings | |