Average Co-Inventor Count = 2.00
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. Cummins Engine Company, Inc. (1 from 649 patents)
2. Barber Colman Company (1 from 115 patents)
2 patents:
1. 4647006 - Rotary electrically actuated device
2. 4339737 - Rotary electrically actuated device