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| Patents for Robert T. Woythal | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,752,595 | Aug. 14, 1973 | J.L. Kirschnik, R.T. Woythal | Adapter for Drill Speeder | ||
| 4,400,859 | Aug. 30, 1983 | P.J. Finet, R.T. Woythal | Machining Centers for Machining Tubular Workpieces | ||
| 4,421,443 | Dec. 20, 1983 | P.J. Finet, R.T. Woythal | High Speed Machine Tool Spindle Assembly | ||
| 4,679,970 | Jul. 14, 1987 | R.T. Woythal, E.R. Lohneis | High Speed Toolholder for a Machining Center | ||