Average Co-Inventor Count = 2.86
ph-index = 1
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. Trefimetaux (2 from 22 patents)
2 patents:
1. 5660071 - Automatic drawing device
2. 5526663 - Devices for the grooving of tubes