U.S. federal trademark · Serial No. 75747522 · Reg. No. 2466462
[ PROVIDING AN ON-LINE COMPUTER DATABASE IN THE FIELD OF MATHEMATICAL EDUCATION ]
PRE-RECORDED CD-ROMS AND COMPUTER SOFTWARE, AND TEACHERS' MANUALS WITH REPRODUCIBLE MASTERS OF STUDENT WORKSHEETS PACKAGED AND SOLD AS A UNIT THEREWITH, FOR STUDYING MATHEMATICAL CONCEPTS
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