U.S. federal trademark · Serial No. 75154076 · Reg. No. 2494536
physics-based interactive hypertext versions of scientific (including math) textbooks and manuals therefor, sold as a unit, embodied on CD ROMs, computer diskettes and/or computer software downloadable from a global computer information network
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.