TDX
Filed: November 20, 1975
TELEPHONE COMMUNICATION SERVICES INCLUDING TELEPHONE USAGE CONTROLLING AND RECORDING SERVICES WITH SPECIAL EMPHASIS ON OPTIMIZING…
Owned by: TDX SYSTEMS, INC.
Serial Number: 73069734
TDX
Filed: December 2, 1975
TELEPHONE COMMUNICATION SERVICES INCLUDING TELEPHONE USAGE CONTROLLING AND RECORDING SERVICES WITH SPECIAL EMPHASIS ON OPTIMIZING…
Owned by: TDX SYSTEMS, INC.
Serial Number: 73070640
ECONO-CALL
Filed: September 25, 1979
Long Distance Telephone Communications Services
Owned by: TDX SYSTEMS, INC.
Serial Number: 73232715
AUDITCALL
Filed: November 12, 1981
Providing Telephone Management and Billing Services
Owned by: TDX SYSTEMS, INC.
Serial Number: 73336830
TELEMAX
Filed: April 27, 1982
A COMPUTER BASED TELECOMMUNICATIONS MANAGEMENT AND CONTROL SYSTEM
Owned by: TDX SYSTEMS, INC.
Serial Number: 73361845
