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| All Patents in class 409/279 | |||||
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| Number | Date | Patentee | Title | Type | |
| 275,393 | Apr. 10, 1883 | L.J. Knowles | Machine for Forming Key-Seats in Hubs of Gears, &c. | metalworking machines | |
| 1,421,014 | Jun. 27, 1922 | F.J. Lapointe | Attachment for broaching machines | broaching machines | |
| 1,434,711 | Nov. 07, 1922 | F.J. Lapointe | Manually-operated broaching machine | broaching machines | |
| 1,855,766 | Apr. 26, 1932 | F.J. Lapointe | Broaching machine | broaching machines | |