Average Co-Inventor Count = 4.00
ph-index = 1
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 (3 from 85 patents)
3 patents:
1. 11374546 - Automatic volume control for land mobile radio
2. 10469047 - Automatic volume control for land mobile radio
3. 9923534 - Automatic volume control for land mobile radio