Average Co-Inventor Count = 1.71
ph-index = 4
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. Thomas F. Parker & Associates, Inc. (4 from 4 patents)
4 patents:
1. 5315775 - Digital sign
2. 5269597 - Dispensing rack
3. D340260 - Combined header and sign support housing for advertising
4. 5229749 - Security system for cigarette display case