U.S. federal trademark · Serial No. 74553166
house mark for a full line of reference books on contemporary issues in such fields as medicine, health, history, politics and current events; house mark for other publications, namely encyclopedias, dictionaries, atlases, treatises, and loose leaf publications
house mark for a full line of software for use in the publishing field
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.