Average Co-Inventor Count = 5.71
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. Snap-on Tools Corporation (4 from 157 patents)
4 patents:
1. D309246 - Screwdriver
2. D307236 - Screwdriver
3. 4777852 - Ratcheting screwdriver
4. D292893 - Timing light