Average Co-Inventor Count = 1.78
ph-index = 7
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. (8 from 91 patents)
8 patents:
1. 5833236 - Wrecking ball play feature for a pinball game
2. 5417423 - Multiple kicker ramp for a pinball game
3. 5356141 - Roulette scoring device
4. 5351954 - Magnetic ball carrier for a pinball game
5. 5226653 - Multilevel play feature for a pinball game
6. 5120059 - Rotary serial play feature
7. 4861037 - Pinball runway and scoring feature
8. 4773646 - Moving target assembly