Average Co-Inventor Count = 4.00
ph-index = 2
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. At+t Corp. (1 from 4,208 patents)
2. At&t Bell Laboratories (1 from 3,345 patents)
2 patents:
1. 5403999 - Telecommunications systems for lotteries
2. 4996705 - Use of telecommunications systems for lotteries