Average Co-Inventor Count = 4.00
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. Wenger Corporation (3 from 102 patents)
3 patents:
1. 4768617 - Adjustable stairway having retractable wheel carriage
2. 4241777 - Portable shell
3. 4238097 - Conductor's chair