Average Co-Inventor Count = 4.44
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. Royal Appliance Mfg., Co. (2 from 234 patents)
2 patents:
1. 6536072 - Compression latch for dirt cup
2. 6510585 - Turbo tool