Average Co-Inventor Count = 3.60
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. Williams Electronics Games, Inc. (3 from 91 patents)
3 patents:
1. 5149093 - Amusement device with trading card dispenser
2. 5137278 - Amusement device with trading card dispenser
3. 4773646 - Moving target assembly