Inventor
MCLEOD CLARK E
US3 patents
Patents
3 patentsUS5555290ASep 10, 1996
Long distance telephone switching system with enhanced subscriber services
MCI COMMUNICATIONS CORP116 citations98
US5222120AJun 22, 1993
Long distance telephone switching system with enhanced subscriber services
MCI COMMUNICATIONS CORP272 citations98
US5550899AAug 27, 1996
Long distance telephone switching system with enhanced subscriber services
MCI COMMUNICATIONS CORP29 citations92