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| Patents for Robert Kirk | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 308,746 | Dec. 02, 1884 | A.J. Burger | Carpenter's Gage | |
 | 327,969 | Oct. 06, 1885 | A.C. Stowe | Combined Gimlet and Screwdriver | |
 | 347,179 | Aug. 10, 1886 | C.H. Hubbell, W.A. Kelly | Wrench Attachment | |
 | 397,043 | Jan. 29, 1889 | R.D. Werden | Spirit Level | |