Average Co-Inventor Count = 2.67
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. Brown, Boveri & Cie Ag (2 from 188 patents)
2 patents:
1. 4849806 - Shunting element
2. 4489258 - Propulsion system for vehicles with a d-c machine