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| Patents for M. G. Porter | |||||
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| Number | Date | Patentee | Title | Type | |
| 481,213 | Aug. 23, 1892 | J.A. Traut | Buckle | ||
| 588,294 | Aug. 17, 1897 | C.E. Riecker | Rule-Joint | folding rule joints | |
| 668,299 | Feb. 19, 1901 | J.A. Traut | Spokeshave | spokeshaves | |