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Patents for John Charles Beckfeld | |||||
Number | Date | Patentee | Title | Type | |
417,624 | Dec. 17, 1889 | J.C. Beckfeld | Operating Gas Engines | gas and gasoline engines | |
421,474 | Feb. 18, 1890 | A. Schmid, J.C. Beckfeld | Gas Engine | gas and gasoline engines | |
421,475 | Feb. 18, 1890 | A. Schmid, J.C. Beckfeld | Gas Engine | gas and gasoline engines | |
421,477 | Feb. 18, 1890 | A. Schmid, J.C. Beckfeld | Gas Engine | gas and gasoline engines |