Average Co-Inventor Count = 2.00
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 (3 from 502 patents)
3 patents:
1. 4105319 - Microfiche carrier
2. D247499 - Microfilm recorder or similar article
3. 3970385 - Microfilm recorder document transport system