Average Co-Inventor Count = 2.00
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. Shure Brothers Incorporated (2 from 55 patents)
2 patents:
1. D274811 - Phonograph cartridge
2. D274812 - Phonograph stylus