U.S. federal trademark · Serial No. 87018423
Educational publications, namely, books, hand-outs, workbooks, study guides and educational instruction guides in the fields of mathematics, teaching problem solving in mathematics, computer programming and language arts; Printed instructional, educational, and teaching materials in the field of mathematics, teaching problem solving in mathematics, computer programming and language arts; A series of books and written articles in the field of mathematics, teaching problem solving in mathematics, computer programming and language arts
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