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| Patents for Carl J. Ostendorf | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,978,976 | Apr. 11, 1961 | M.W. Hazelton, R.E. Griesheimer, C.J. Ostendorf | Level control for press brakes and the like | sheet metal brakes | |
| 3,041,963 | Jul. 03, 1962 | M.W. Hazelton, C.J. Ostendorf | Stop device for press brakes and the like | sheet metal brakes | |