Average Co-Inventor Count = 1.33
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. Sperry Rand Corporation (4 from 628 patents)
4 patents:
1. 4146960 - Thinning comb for powered hair trimmer
2. 4138809 - Hair trimmer
3. 4131995 - Smoothing comb for a hair trimmer
4. 4125940 - Hair trimmer