U.S. federal trademark · Serial No. 90812512 · Reg. No. 6739111
downloadable computer software for use as a software shell for the delivery of ebooks, e textbooks, and e-publications in the fields of education, literature, science, entertainment, the arts, mathematics, language studies, humanities, medicine, social sciences, law, engineering, music, classics, philosophy, history, economics, architecture, anthropology, politics, archeology, and international studies
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