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| Patents for M. L. Allen | |||||
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| Number | Date | Patentee | Title | Type | |
| 848,190 | Mar. 26, 1907 | H.E. Morton, M. Morton | Shaper for Crowning and Finishing Driving Boxes on Locomotives, &c. | metal shapers | |
| 848,191 | Mar. 26, 1907 | H.E. Morton, M. Morton | Attachment for Draw Cut Shapers | metal shaper accessories | |
| 1,092,447 | Apr. 07, 1914 | C.S. Leland | Glazier's tool | combination tools | |