Average Co-Inventor Count = 1.00
ph-index = 2
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. Ramtek Corporation (3 from 10 patents)
3 patents:
1. 4215867 - Targets and gated firing guns for propelling balls thereto
2. 4185824 - Ball launcher with finger spin loading
3. D252646 - Gun amusement cabinet