Average Co-Inventor Count = 5.14
ph-index = 3
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 Bell Laboratories (4 from 3,345 patents)
4 patents:
1. D344525 - Telephone handset
2. D344516 - Telephone stand
3. D341586 - Video telephone set
4. D321870 - Video telephone set