Average Co-Inventor Count = 3.53
ph-index = 4
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 (3 from 502 patents)
2. Other (1 from 832,966 patents)
3. Bell & Howell Phillipsburg Company (1 from 45 patents)
5 patents:
1. 5000434 - Insertion machine with improved insert track
2. 4955185 - Insertion machine
3. 4939887 - Insertion machine
4. 4865304 - Insertion machine with improved insert track
5. 4798040 - Insertion machine