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| Patents for Ragnar L. Carlstedt | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,891,424 | Jun. 23, 1959 | R.L. Carlstedt | Depth gage for boring machines | |
 | 2,903,917 | Sep. 15, 1959 | R.L. Carlstedt | Steady rest structure | |
 | 2,953,951 | Sep. 27, 1960 | R.L. Carlstedt | Boring tool | |
 | 2,969,698 | Jan. 31, 1961 | R.L. Carlstedt | Control system for a boring machine | |
| 3,377,685 | Apr. 16, 1968 | R.L. Carlstedt | Guide Arrangement for Relatively Moveable Parts | ||