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| All Patents in class 285/276 | |||||
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| Number | Date | Patentee | Title | Type | |
| 692,988 | Feb. 11, 1902 | A.S. Davis | Drill-chuck | drill chucks | |
| 2,021,241 | Nov. 19, 1935 | A.W. Mall | Quick detachable coupling | ||
| 2,599,664 | Jun. 10, 1952 | H.E. Sloan | Swivel connection for air--perated chucks | metal lathe chucks | |