Average Co-Inventor Count = 1.50
ph-index = 3
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 832,812 patents)
2. Pennsylvania Wire Rope Corporation (2 from 3 patents)
4 patents:
1. 8397953 - Personal protection device
2. D636050 - Personal protection device
3. 4005613 - Brake operating lever
4. 3974712 - Auxiliary brake lever