Average Co-Inventor Count = 1.64
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. Fetterolf Corporation (2 from 3 patents)
2. Other (1 from 832,891 patents)
3 patents:
1. 5165640 - Spring clip for perforated board tool holders
2. 4867197 - High pressure valve
3. 4343332 - Line blind