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| All Patents in class 384/540 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,210,280 | Dec. 26, 1916 | A.M. Drake | Adjustable shaft-bearing | industrial machine bearings | |
| 1,290,897 | Jan. 14, 1919 | W.L. Bryant | Grinding-tool | grinders | |
| 1,692,460 | Nov. 20, 1928 | C.L. Mattison | Detachable bearing head for cutter shafts and the like | woodworking machine mechanisms | |
| 1,834,627 | Dec. 01, 1931 | B. Lundgreen | Spindle Mounting | grinding machines | |