Average Co-Inventor Count = 1.20
ph-index = 3
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. Racal Acoustics Limited (3 from 11 patents)
3 patents:
1. 7978870 - Attachment apparatus
2. D611933 - Ear piece
3. D609699 - Ear piece