Average Co-Inventor Count = 3.75
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. Knorr Brake Holding Corporation (3 from 22 patents)
2. General Signal Corporation (1 from 786 patents)
3. John D. Brush Co., Inc. (1 from 113 patents)
5 patents:
1. D521734 - Enclosure
2. D324508 - Locomotive console
3. D323136 - Master controller unit for a locomotive train
4. D321853 - Combined locomotive console and master controller cover
5. D320972 - Master controller cover for a locomotive train