Average Co-Inventor Count = 3.00
ph-index = 3
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. Motter Printing Press Co. (2 from 14 patents)
2. Man Roland Druckmaschinen (1 from 22 patents)
3 patents:
1. 5787808 - Hollow cylinder retention device
2. 5085144 - Ink fountain apparatus
3. 4890555 - Printing press plate lockup