Average Co-Inventor Count = 2.86
ph-index = 1
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. Vermeer Manufacturing Company, Inc. (1 from 470 patents)
2. Herzog Railroad Services, Inc. (1 from 24 patents)
2 patents:
1. 11408131 - Track-lifting and ballast-spreading apparatus
2. 10195913 - Two-point hitch mount systems