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| Patents for McLagon & Stevens | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 75,198 | Mar. 03, 1868 | J. Root | Improved bolt-heading machine | |
 | 88,214 | Mar. 23, 1869 | J. Root | Improved bolt-heading machine | |
 | 98,795 | Jan. 11, 1870 | F.P. Pfleghar | Improvement in knob-latches | |
 | 100,928 | Mar. 15, 1870 | J. Root | Improved machine for heading bolts | |