Average Co-Inventor Count = 1.20
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. Rolf Ahlbergs Mekaniska Verkstad Ab (2 from 2 patents)
2. Ahlberg Rehab Ab (1 from 2 patents)
3 patents:
1. D367251 - Foldable walking aid
2. 4661035 - Collapsible wheel-chair and apparatus for lifting the wheel-chair into
3. D289507 - Wheeled walking frame