U.S. federal trademark · Serial No. 85617461 · Reg. No. 4267886
Providing on-line publications in the nature of electronic books in the field of science and engineering for educational professionals, teachers, and students; online electronic publishing of books and periodicals for K-12 in the field of public education
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.