U.S. federal trademark · Serial No. 75157612
radio sending device affixed to inside door of a R.F.D. mailbox, sends signal to receiving unit in the residence when the mailbox door is opened; the radio signal activates the receiving unit which then plays a short symphony, a green light is activated alerting the residents that their mail has been delivered
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.