Average Co-Inventor Count = 3.00
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. North States Industries, Inc. (1 from 22 patents)
2. Gte Business Communication Systems Inc. (1 from 20 patents)
2 patents:
1. 4607455 - Adjustable gate for doorways
2. D282927 - Telephone instrument