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| Patents for Eastern Tube & Tool Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,109,121 | Sep. 01, 1914 | G.W. Emrick | Drill-chuck | drill chucks | |
| 1,364,361 | Jan. 04, 1921 | G.W. Emrick | Drill-chuck | drill chucks | |
| 1,485,671 | Mar. 04, 1924 | G.W. Emrick | Chuck | drill chucks | |
| 1,506,367 | Aug. 26, 1924 | G.W. Emrick | Tapping attachment | tapping heads and chucks | |
| 1,559,944 | Nov. 03, 1925 | G.W. Emrick | Clutch construction for tapping attachments and the like | tapping heads and chucks | |
| 1,564,768 | Dec. 08, 1925 | G.W. Emrick | Chuck | drill press chucks | |