Average Co-Inventor Count = 2.00
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. National Business Systems, Inc. (3 from 17 patents)
3 patents:
1. 4742770 - Variable field credit card imprinter with disabling mechanism
2. 4715298 - Electrically powered imprinter
3. 4655132 - Electrically powdered imprinter