Average Co-Inventor Count = 3.43
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. Amtel Communications, Inc. (1 from 9 patents)
2. Amtelco (1 from 2 patents)
2 patents:
1. 4737980 - Computer data entry method and apparatus
2. 4727357 - Compact keyboard system