Average Co-Inventor Count = 2.78
ph-index = 5
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. National Manufacturing Co. (5 from 40 patents)
5 patents:
1. D447358 - Double shepherd hook
2. D444609 - Mailbox
3. D442760 - Mailbox
4. D442761 - Mailbox
5. D442348 - Mailbox