Average Co-Inventor Count = 3.43
ph-index = 1
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. Ellison Educational Equipment, Inc. (2 from 34 patents)
2 patents:
1. D527423 - Portable punch with grip portion
2. D480737 - Portable punch