Average Co-Inventor Count = 1.00
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. American Telephone and Telegraph Corporation (1 from 7 patents)
2. Americal Telephone and Telegraph (1 from 1 patent)
2 patents:
1. 4175271 - Helical video tape insert recording editing method with flying erase
2. 4163262 - Helical video tape recorder arrangement suitable for high quality editing