Average Co-Inventor Count = 1.50
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. Atwood Vacuum Machine Company (1 from 23 patents)
2. Hellstar Corporation (1 from 1 patent)
2 patents:
1. D267718 - Beam balanced pumping unit
2. 4283073 - Ball type gooseneck hitch