Average Co-Inventor Count = 4.20
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. Douglas Machine Inc. (2 from 50 patents)
2 patents:
1. 7533768 - Retractable transfer device metering apparatus and methods
2. 7156607 - Carton stacking apparatus and method