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| Patents for Otto L. Johnson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 57,120 | Aug. 14, 1866 | A. Goodyear | Improvement in machines for cutting barrel-hoops | |
 | 66,146 | Jun. 25, 1867 | A. Goodyear | Hub lathe | |
 | 464,899 | Dec. 08, 1891 | G.B. Schaeffer | Pipe or Nut Wrench | |