Average Co-Inventor Count = 3.00
ph-index = 2
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. Pullman Standard Inc. (2 from 22 patents)
2 patents:
1. 4690072 - Railway car body structural arrangement
2. 4573594 - Railway car underframe adapted for use with couple or drawbar