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| Patents for M. G. Porter | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 481,213 | Aug. 23, 1892 | J.A. Traut | Buckle | |
![]() | 588,294 | Aug. 17, 1897 | C.E. Riecker | Rule-Joint | |
![]() | 668,299 | Feb. 19, 1901 | J.A. Traut | Spokeshave | |