AT&T Bell Laboratories won a patent this week for software that allows telephones to ring with different melodies, depending on the source of a call.

From 1980 to 1985 he worked at AT&T Bell Laboratories, where he developed computer languages for business modeling applications.

After the war, he returned to Princeton, dividing his time between the university and AT&T Bell Laboratories.

After his graduate work, in theoretical high-energy physics, he joined AT&T Bell Laboratories, one of the nation's premiere research institutions.

From 1968 to 1975, he worked at AT&T Bell Laboratories.

He did research at AT&T Bell Laboratories before joining the Columbia faculty in 1988.

In December 1962, he joined AT&T Bell Laboratories where he has worked since.

The first application of continuous auditing was developed at AT&T Bell Laboratories in 1989.

AT&T Bell Laboratories - The first model of continuous auditing was developed to evaluate the billing system within the company.

It was endowed by AT&T Bell Laboratories as a means of recognizing outstanding scientific work.