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. Zahnradfabrik Friedrichshafen, Ag. (2 from 416 patents)
2 patents:
1. 4807489 - Gear shift device
2. 4753332 - Friction clutch assembly with selective lubrication during the friction