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| All Patents in class 411/437 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 81,480 | Aug. 25, 1868 | G.P. Darrow | Improvement in cast nuts | |
| 122,243 | Dec. 26, 1871 | J. Flower | Improvement in Boring Bars for Facing the Ends of Cylinders | ||
 | 800,988 | Oct. 03, 1905 | A.B. Cook | Wrench | |
 | 1,096,763 | May 12, 1914 | C. Smith | Wrench | |