Average Co-Inventor Count = 2.11
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. Wham-O Mfg. Co. (4 from 16 patents)
2. Other (1 from 833,002 patents)
5 patents:
1. 4399993 - Two handed tennis racket
2. 4334385 - Flying disc
3. 4235378 - Water play toy
4. D248632 - Visual display apparatus
5. 4045026 - Jai alai apparatus