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| Patents Granted on 1921-09-06 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,389,581 | Sep. 06, 1921 | C.A. Dies | Wrench | pipe wrenches | |
| 1,389,584 | Sep. 06, 1921 | G.W. Goodridge | Splicing Tool | pliers | |
| 1,389,731 | Sep. 06, 1921 | W.A. Barker | Chuck | metal lathe chucks | |
| 1,389,919 | Sep. 06, 1921 | W.E. Ward | Headstock Mechanism of Lathes | metalworking power transmission | |