Average Co-Inventor Count = 1.00
ph-index = 3
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. Libman Broom Company (7 from 20 patents)
7 patents:
1. D307981 - Combined push broom head and scraper
2. D307674 - Brush handle
3. D306526 - Dust brush handle
4. D306525 - Utility brush handle
5. D304649 - Brush handle
6. D303323 - Brush handle
7. D303178 - Brush handle