21 ELECTRONIC TELETYPEWRITER EXCHANGE FOR TELETYPEWRITER NETWORKS DESIGNED TO ROUTE, CONNECT, DISCONNECT, TIME, BILL, AND OTHERWISE CONTROL CALLS BETWEEN AND AMONG TELETYPEWRITER USERS INCLUDED IN THE NETWORK
Trademark Events
Oct 24, 1994
Expired Sec. 9
Aug 28, 1979
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.