Average Co-Inventor Count = 4.00
ph-index = 1
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. American Telephone and Telegraph, Co. (1 from 386 patents)
2. At&t Information Systems Inc. (1 from 243 patents)
1 patent:
1. 4899377 - Communication terminal telephone directory with dynamic directory tabbing