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| Patents for Ralph Johnson | |||||
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| Number | Date | Patentee | Title | Type | |
| 184,158 | Nov. 07, 1876 | H.W. Kip | Method of Making Hammers | hammers | |
| 189,232 | Apr. 03, 1877 | E. Rieckel, H.W. Kip | Dies For Making Hammers | hammers | |
| 1,563,712 | Dec. 01, 1925 | R. Johnson | Bearing Grinding Machine | portable grinding machines | |