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Patents for Walter A. Knight | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 933,860 | Sep. 14, 1909 | F.J. Stolle | Combination Tool | |
![]() | 1,213,253 | Jan. 23, 1917 | A.C. Pletz | Tapping or thread-cutting device |