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| All Patents in class 409/77 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,501,252 | Jul. 15, 1924 | G.T. Trundle, Jr. | Thread Milling Machine | thread hobbing and thread milling machines | |
| 2,776,604 | Jan. 08, 1957 | A. Simsack | Milling Attachments for Lathes | metal lathe accessories and attachments | |
| 3,052,011 | Sep. 04, 1962 | R.K. Sedgwick, J.A. Hansen, W.E. Brainard, H.J. Baechle, C.B. Sipek | Machine Tool with a Mechanical Cutting Tool Changer | milling machines | |