Average Co-Inventor Count = 1.33
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. Etablissements Carpano & Pons (1 from 17 patents)
2. De Visu International (1 from 1 patent)
2 patents:
1. 4203234 - Rollable chart
2. 4015792 - Device for alternately winding flexible bands and the like between two