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