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| Patents for Hobart S. Johnson | |||||
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| Number | Date | Patentee | Title | Type | |
| 932,394 | Aug. 24, 1909 | H.S. Johnson | Bar Stock Feeder for Use in Turret Lathes, Screw Machines, and the Like | turret lathes | |
| 932,709 | Aug. 31, 1909 | H.S. Johnson | Chuck | metal lathe chucks | |