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| All Patents in class 279/65 | |||||
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| Number | Date | Patentee | Title | Type | |
| 243,093 | Jun. 21, 1881 | J. Watson | Bit-stock | hand drills | |
| 246,513 | Aug. 30, 1881 | F.W. Ireland | Bit-brace | brace chucks | |
| 1,288,154 | Dec. 17, 1918 | C.A. Palmgren | Drill-chuck | drill chucks | |
| 2,172,070 | Sep. 05, 1939 | C.A. Palmgren | Chuck | drill chucks | |
| 2,479,973 | Aug. 23, 1949 | J.Y. Scott, E.A. Allen, F.P. Healy | Chuck | valve and seat maintenance | |