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| All Patents in class 409/285 | |||||
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| Number | Date | Patentee | Title | Type | |
| 876,277 | Jan. 07, 1908 | J.N. Lapointe | Key-seat-broaching machine | key seating machines | |
| 1,266,496 | May 14, 1918 | F.J. Lapointe | Key Seat Broaching Machine | broaching machines | |
| 1,929,593 | Oct. 10, 1933 | F.J. Lapointe | Hydraulic screw broaching machine | broaching machines | |