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| Patents for Covel Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,339,452 | May 11, 1920 | E.T. Gorham | Dressing-tool for grinding-wheels | grinder dressers | |
| 1,382,003 | Jun. 21, 1921 | H.W. Lightner | Drill-holder | drill sharpening machines | |
| 1,391,034 | Sep. 20, 1921 | A. Williams | Drill-holder | drill sharpening machines | |