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. E.f. Johnson Company (2 from 85 patents)
2 patents:
1. D397109 - Handheld two-way radio with hinged cover
2. D384059 - Handheld two-way radio with hinged cover