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| Patents for John Hans Davids | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,566,080 | Aug. 28, 1951 | J.H. Davids | Bushing Assembly | industrial machine bearings | |
| 2,708,916 | May 24, 1955 | J.H. Davids | Fuel Control System for Internal Combustion Engines | internal combustion engine governors | |
| 2,780,211 | Feb. 05, 1957 | J.H. Davids | Engine Fuel Delivery Control | fuel systems | |
| 2,852,013 | Sep. 16, 1958 | J.H. Davids | Fuel Supply Regulator for Gas Engines | fuel systems | |