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| Patents for George E. Witherell | |||||
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| Number | Date | Patentee | Title | Type | |
| 409,441 | Aug. 20, 1889 | G.E. Witherell | Machine for Dressing the Ends of Screw Blanks | nut or bolt making machines | |
| 511,829 | Jan. 02, 1894 | G.E. Witherell | Turret Tool Machine | metal lathe accessories and attachments | |
| 578,802 | Mar. 16, 1897 | G.E. Witherell | Thread Cutter | tap and die holders | |