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| Patents for Automatic Drill Chuck Corp. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,030,988 | Jul. 02, 1912 | G.W. Emrick | Drill-chuck | drill press chucks | |
| CA-141,809 | Jul. 23, 1912 | G.W. Emrick | Drill chuck | drill press chucks | |
| 1,104,255 | Jul. 21, 1914 | G.W. Emrick | Drill-chuck | drill press chucks | |