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| All Patents in class 409/243 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,751,822 | Jun. 26, 1956 | B.P. Schiltz | Broaching machine with anti-chatter control | broaching machines | |
| 2,849,929 | Sep. 02, 1958 | H.C. Thorstens | Broaching Attachment | broaching machines | |
| 3,881,398 | May 06, 1975 | V.J. Gravagne | Reciprocating Tool Attachment for Milling Machine | milling machine accessories | |