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. The Singer Company (2 from 1,246 patents)
2 patents:
1. 4553491 - Control mechanism in a sewing machine for pattern and buttonhole sewing
2. 4408553 - Low torque direct dialing pattern selection mechanism