Average Co-Inventor Count = 6.40
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. Royal Appliance Mfg., Co. (4 from 234 patents)
4 patents:
1. D626708 - Hand vacuum
2. D575013 - Hand held vacuum body
3. D568016 - Base for a stick vacuum cleaner
4. D568015 - Handle for a stick vacuum cleaner