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All Patents in class 279/2.17
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
163,217May 11, 1875P.B. LawsonExpanding Mandrelmandrels and arbors
574,763Jan. 05, 1897F.A. RudolphDental Tooldental apparatus
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