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| Patents for J. W.B. Covington | |||||
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| Number | Date | Patentee | Title | Type | |
| 52,579 | Feb. 13, 1866 | R. Ledig | Improvement in Spirit-Levels | inclinometers | |
| 53,397 | Mar. 27, 1866 | W.W. Branch, Jr. | Combination Bevel and Protractor | bevels | |
| 57,588 | Aug. 28, 1866 | P. Soper | Improvement in Calipers | calipers | |
| 60,186 | Dec. 04, 1866 | R. Hathaway | Improvement in Surface and Depth gauges | surface gauges | |