Average Co-Inventor Count = 3.75
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. Usm Corporation (1 from 532 patents)
2. British United Shoe Machinery Ltd. (1 from 35 patents)
2 patents:
1. 4920594 - Apparatus for lasting toe, side and heel seat portions of a shoe
2. 4485512 - Machines for lasting heel seat portions of shoes