Average Co-Inventor Count = 4.00
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. Bell + Howell Company (2 from 502 patents)
2. Bell & Howell Phillipsburg Company (1 from 45 patents)
3 patents:
1. 4955185 - Insertion machine
2. 4939887 - Insertion machine
3. 4798040 - Insertion machine