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| Patents for Christian Johnson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 927,751 | Jul. 13, 1909 | C. Rasmussen | Power hacksaw-machine | |
 | 992,392 | May 16, 1911 | E. Koziczenski, J. Tucholski | Rabbeting Spokeshave | |
 | 1,280,341 | Oct. 01, 1918 | H. Wardman | Band Saw | |