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| Patents for Howard P. King | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,324,367 | Dec. 09, 1919 | E.W. Zeh | Power-press | screw presses | |
| 1,349,033 | Aug. 10, 1920 | E.W. Zeh | Power-press | stamping presses | |