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| Patents for William Blacker | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 1,054,332 | Feb. 25, 1913 | W. Blacker | Mechanical or Power Actuated Hammer | |
![]() | 1,297,990 | Mar. 25, 1919 | W. Blacker | Treadle Hammer | |
![]() | 1,349,939 | Aug. 17, 1920 | W. Blacker | Mechanical or Power Actuated Hammer | |