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| Patents for Ralph B. Hain | |||||
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| Number | Date | Patentee | Title | Type | |
| 531,182 | Dec. 18, 1894 | R.B. Hain | Combustible Vapor Engine | ||
| 599,653 | Feb. 22, 1898 | R.B. Hain | Multiple Cylinder Vapor Engine | gas and gasoline engines | |
| 607,992 | Jul. 26, 1898 | R.B. Hain | Igniter for Gas Engines | ignition systems | |