Average Co-Inventor Count = 1.50
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. Amsted Industries Inc. (3 from 317 patents)
3 patents:
1. 4729325 - Bolster with improved brake assembly mounting arrangement
2. 4637319 - Bolster friction shoe pocket
3. 4274340 - Railway car truck frictional snubbing arrangement