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| Patents for B. L. Johnston | |||||
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| Number | Date | Patentee | Title | Type | |
| 180,429 | Aug. 01, 1876 | E.C. Keys | Improvement in insertible saw-teeth | insertable saw teeth | |
| 202,089 | Apr. 09, 1878 | H. Badcock | Pipe Tongs | pipe tongs | |