Average Co-Inventor Count = 1.50
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. Deere + Company (3 from 8,451 patents)
3 patents:
1. 4540220 - Means of securing an axle to frame
2. 4417759 - Grapple pivot joint with swing dampener
3. 4372573 - Drop hitch system