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. Hallmark Cards, Inc. (1 from 233 patents)
2 patents:
1. D304994 - Vehicle starter switch auxiliary handle
2. D294443 - Laminated plastic and paper tablecloth or similar article