Average Co-Inventor Count = 3.60
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. Ellison Educational Equipment, Inc. (3 from 34 patents)
3 patents:
1. D527423 - Portable punch with grip portion
2. D472564 - Die press
3. D468187 - Grip for a die press