Average Co-Inventor Count = 4.00
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. System Development Inc. (1 from 25 patents)
2. Systems Development Corporation (1 from 2 patents)
2 patents:
1. 4267568 - Information storage and retrieval system
2. 4068298 - Information storage and retrieval system