Average Co-Inventor Count = 2.36
ph-index = 4
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. Marvin Glass & Associates (5 from 422 patents)
5 patents:
1. D270359 - Electronic game housing
2. 4216612 - Toy vehicle
3. 4191374 - Projectile return apparatus with ball target area
4. 4183533 - Game with pivoting projector and target compartments
5. 4107872 - Action toy for land and water