Average Co-Inventor Count = 3.00
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. Pullman Incorporated (2 from 228 patents)
2 patents:
1. 4262604 - Railway car roof hatch cover lock
2. 4082045 - Stability bracing for twist on high gondolas or hopper cars