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| All Patents in class 409/165 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,902,278 | Sep. 02, 1975 | R.E. Crossman, H.R. Uhtenwoldt | Grinding Machine for Generating an Epitrochoidal Surface | profile and contour grinders | |
| 4,400,859 | Aug. 30, 1983 | P.J. Finet, R.T. Woythal | Machining Centers for Machining Tubular Workpieces | milling machines | |
| 5,634,250 | Jun. 03, 1997 | V. Mihailovic | Hobbing Accessory for Vertical Milling Machine | milling machine accessories | |