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| All Patents in class 285/322 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 234,517 | Nov. 16, 1880 | Q.S. Backus | Bit-stock | |
 | 295,408 | Mar. 18, 1884 | G.W. Kerr | Quick-acting brace chuck for square-shank bits. | |
| 798,125 | Aug. 29, 1905 | W.N. Ager | Tool Holder | ||
| 1,511,723 | Oct. 14, 1924 | E.R. Draver | Means for connecting tubular members | ||
| 1,517,544 | Dec. 02, 1924 | E.R. Draver | Means for coupling telescoped tubular members | ||