Average Co-Inventor Count = 3.00
ph-index = 1
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. Pfaff Industriemaschinen Gmbh (2 from 179 patents)
2 patents:
1. D297541 - Sewing machine
2. 4677924 - Sewing machine housing construction