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All Patents in class 33/23.05
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
364,043May 31, 1887C.S. RichéPantographpantographs
420,484Feb. 04, 1890R.W. WhitneyInstrument for Copying Drawingsdraftsman
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