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