Average Co-Inventor Count = 2.40
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 (4 from 422 patents)
4 patents:
1. 4707921 - Extension handle for a handheld electrically powered tool
2. 4580994 - Toy vehicle
3. 4209940 - Toy ejector apparatus
4. 3990704 - Target image projector with simulated gun assembly