Average Co-Inventor Count = 4.00
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. Willinger Bros., Inc. (2 from 46 patents)
2 patents:
1. 5290157 - Clamp for attaching an aquarium power head
2. 5282727 - Aquarium power head with integral muffler