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| Patents for Platt R. Richards | |||||
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| Number | Date | Patentee | Title | Type | |
| 87,833 | Mar. 16, 1869 | J.B. Fink | Spindle Wrench | axle nut wrenches that lock nut to wheel hub | |
| 101,938 | Apr. 12, 1870 | R.H. Strong | Improvement in saw-filing machine | saw sharpening machines | |