Average Co-Inventor Count = 2.57
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. Fruehauf Corporation (3 from 35 patents)
3 patents:
1. D274322 - Tractor trailer
2. D274321 - Trailer
3. 4157747 - Brake assembly