Average Co-Inventor Count = 3.11
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. Northern Electric Company Limited (1 from 64 patents)
2. Basic Incorporated (1 from 4 patents)
2 patents:
1. D258062 - Telephone dialer
2. 3955054 - Telephone housing having interchangeable dial face inserts