Average Co-Inventor Count = 2.00
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. International Games System Co., Ltd. (1 from 4 patents)
1 patent:
1. 7997986 - Steering wheel-shaped joystick for arcade game machine