U.S. federal trademark · Serial No. 74726037
preparation of advertising and publicity in the format of lottery raffle premium gift articles having text written thereon which becomes legible only when a special liquid is applied thereon so that the user can read a hidden message or determine if a prize has been won only upon application of a special liquid for goods and services of others
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.