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| Patents for Leonard B. Kapp | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,764,727 | Jun. 17, 1930 | L.B. Kapp | Lubrication of Bearings | internal combustion engine lubrication | |
| 1,825,318 | Sep. 29, 1931 | L.B. Kapp | Pump | internal combustion engine lubrication | |