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Patents for John P. Summers | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 92,124 | Jun. 29, 1869 | J.P. Summers | Improvement in sawing-machines | |
![]() | 133,497 | Nov. 26, 1872 | J.P. Summers | Improvement in sawing-machines |