21 ELECTRIC SIGNALING DEVICES AND MAIL ACTUATED SWITCHES COOPERABLE THEREWITH, FOR SIGNALING THE PRESENCE OF MAIL IN MAILBOXES, AND THE NECESSARY CIRCUITRY AND POWER SUPPLIES THEREFOR
Trademark Events
Feb 14, 1994
Expired Sec. 9
Aug 28, 1979
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.