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Patents for Platt R. Richards
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
87,833Mar. 16, 1869J.B. FinkSpindle Wrenchaxle nut wrenches that lock nut to wheel hub
101,938Apr. 12, 1870R.H. StrongImprovement in saw-filing machinesaw sharpening machines
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