Average Co-Inventor Count = 2.40
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. 4573421 - Sewing machine device for making garments with pleats
2. 4418629 - Device for making darts on cut parts of garments