Average Co-Inventor Count = 3.20
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. Other (2 from 832,880 patents)
2 patents:
1. 5561929 - Rotary card files
2. 5472451 - Endoscopic surgical instrument with acute angle orientation