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| All Patents in class 411/999 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,389,731 | Sep. 06, 1921 | W.A. Barker | Chuck | metal lathe chucks | |
| 1,401,956 | Jan. 03, 1922 | W.L. Bonnell | Wrench | ||
| 1,609,535 | Dec. 07, 1926 | G.E. Butler | Hair Clippers and the Like | hair clippers | |
| 2,151,255 | Mar. 21, 1939 | E.J. Witchger | Spring Nut | ||