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| Patents for Leo Kramer | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,953,903 | Sep. 27, 1960 | L. Kramer, D.K. Skoog | Hydraulic system for operating simultaneously a plurality of power units | ||
| 3,214,940 | Nov. 02, 1965 | L. Kramer | Pneumatic impact wrench | ||
| 3,232,176 | Feb. 01, 1966 | L.A. Wagnon, R.E. Shulters, L. Kramer, J.C. Hearning | Percussion tool | ||
| 3,263,449 | Aug. 02, 1966 | L. Kramer | Pneumatic impact wrench | ||