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| Patents for Bown Machine Co., Ltd. | |||||
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| Number | Date | Patentee | Title | Type | |
| 904,504 | Nov. 24, 1908 | C.E. Bown | Tool Holder | lathe tool holders and tool posts | |
| 911,537 | Feb. 02, 1909 | C.E. Bown | Tool Holder | lathe tool holders and tool posts | |
| 913,804 | Mar. 02, 1909 | C.E. Bown | Tool Holder | lathe tool holders and tool posts | |