Average Co-Inventor Count = 5.00
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. Harper Brush Works, Inc. (2 from 15 patents)
2 patents:
1. D628468 - Clip for attachment to a broom
2. D622134 - Top broom clip