Average Co-Inventor Count = 3.00
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. Addressograph Multigraph Corporation (2 from 138 patents)
2 patents:
1. 4025177 - Microfiche viewer
2. 3991497 - Information storage means