Average Co-Inventor Count = 3.00
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. Handi-craft Company (2 from 50 patents)
2. Hasbro Industries, Inc. (1 from 48 patents)
3 patents:
1. D642867 - Training cup
2. D619851 - Training cup
3. 4458444 - Track laying toy vehicle