Average Co-Inventor Count = 2.25
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. Elgin Sweeper Co. (2 from 20 patents)
2. Motor Wheel Corporation (1 from 112 patents)
3 patents:
1. D307960 - Control panel for street sweeper
2. D307203 - Cab for street sweeper
3. D292692 - Wheel