In the decades he has spent in executive suites , C. Michael Armstrong was identified with some of the best-known totems of corporate America : I.B.M. , Hughes , AT&T and Comcast .
C. Michael Armstrong
Comcast
/business/person/company
C. Michael Armstrong
AT&T
/business/person/company
PERSON
C. Michael Armstrong
LOCATION
America
PERSON
Hughes
ORGANIZATION
AT&T
ORGANIZATION
Comcast