Average Co-Inventor Count = 4.61
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. Voest-alpine Maschinenbau Gesellschaft M.b.h. (3 from 12 patents)
3 patents:
1. 4986498 - Device for determining the condition of railway switches or railway
2. 4927102 - Reversing device for movable parts within the deflection area of a
3. 4917339 - Reversing device for swivelable rails or movable frogs within the