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All Patents in class 33/431
Patents 1 - 4 of 4
First set of recordsLast set of records
45,535Dec. 20, 1864H. TaylorParallel Rule with Protractorrules
48,454Jun. 27, 1865S.L. SimpsonImprovement in Rulersrules
85,991Jan. 19, 1869R.A. BriggsImprovements in combined rule and protractor
102,957May 10, 1870D.M. MooreUniversal Squaremiter squares
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