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Patents for H. J. Koerth | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 568,966 | Oct. 06, 1896 | E.E. Boyd, J.T. Wiley | Pipe Wrench | |
![]() | 575,564 | Jan. 19, 1897 | C.F. Driver | Combined Pipe and Nut Wrench | |
![]() | 597,990 | Jan. 25, 1898 | A.A. Larson | Wrench |