Average Co-Inventor Count = 1.71
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. Gramovox, LLC (4 from 4 patents)
4 patents:
1. 9679585 - Record player
2. D780152 - Turntable
3. D756960 - Speaker
4. D721674 - Speaker base