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All Patents in class 400/673
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
687,167Nov. 19, 1901A.H. Roovers, A.W. RooversDie press
775,354Nov. 22, 1904A.H. Roovers, A.W. RooversDie press
781,620Jan. 31, 1905A.H. Roovers, A.W. RooversDie press
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